diff --git a/examples/src/bin/gtkvideooverlay.rs b/examples/src/bin/gtkvideooverlay.rs
index a69b78f60..95ccfbbe5 100644
--- a/examples/src/bin/gtkvideooverlay.rs
+++ b/examples/src/bin/gtkvideooverlay.rs
@@ -25,8 +25,6 @@ use gio::prelude::*;
 
 use gtk::prelude::*;
 
-use gdk::prelude::*;
-
 use std::env;
 
 use std::os::raw::c_void;
diff --git a/gstreamer-audio/src/audio_channel_position.rs b/gstreamer-audio/src/audio_channel_position.rs
index 71e319e15..9684a31e6 100644
--- a/gstreamer-audio/src/audio_channel_position.rs
+++ b/gstreamer-audio/src/audio_channel_position.rs
@@ -82,7 +82,7 @@ impl AudioChannelPosition {
 
         if valid {
             for (d, s) in positions.iter_mut().zip(positions_raw.iter()) {
-                *d = from_glib(*s);
+                *d = unsafe { from_glib(*s) };
             }
             Ok(())
         } else {
@@ -119,7 +119,7 @@ impl AudioChannelPosition {
 
         if valid {
             for (d, s) in positions.iter_mut().zip(positions_raw.iter()) {
-                *d = from_glib(*s);
+                *d = unsafe { from_glib(*s) };
             }
             Ok(())
         } else {
diff --git a/gstreamer-audio/src/audio_format_info.rs b/gstreamer-audio/src/audio_format_info.rs
index 9c845447d..0354ab065 100644
--- a/gstreamer-audio/src/audio_format_info.rs
+++ b/gstreamer-audio/src/audio_format_info.rs
@@ -21,7 +21,8 @@ pub enum AudioEndianness {
 }
 
 impl FromGlib<i32> for AudioEndianness {
-    fn from_glib(value: i32) -> Self {
+    #[allow(unused_unsafe)]
+    unsafe fn from_glib(value: i32) -> Self {
         assert_initialized_main_thread!();
 
         match value {
@@ -59,7 +60,7 @@ impl AudioFormatInfo {
     }
 
     pub fn format(&self) -> crate::AudioFormat {
-        from_glib(self.0.format)
+        unsafe { from_glib(self.0.format) }
     }
 
     pub fn name<'a>(&self) -> &'a str {
@@ -71,11 +72,11 @@ impl AudioFormatInfo {
     }
 
     pub fn flags(&self) -> crate::AudioFormatFlags {
-        from_glib(self.0.flags)
+        unsafe { from_glib(self.0.flags) }
     }
 
     pub fn endianness(&self) -> AudioEndianness {
-        from_glib(self.0.endianness)
+        unsafe { from_glib(self.0.endianness) }
     }
 
     pub fn width(&self) -> u32 {
@@ -87,7 +88,7 @@ impl AudioFormatInfo {
     }
 
     pub fn unpack_format(&self) -> crate::AudioFormat {
-        from_glib(self.0.unpack_format)
+        unsafe { from_glib(self.0.unpack_format) }
     }
 
     pub fn silence<'a>(&self) -> &'a [u8] {
diff --git a/gstreamer-audio/src/audio_info.rs b/gstreamer-audio/src/audio_info.rs
index 9c596471d..6e0161750 100644
--- a/gstreamer-audio/src/audio_info.rs
+++ b/gstreamer-audio/src/audio_info.rs
@@ -243,11 +243,11 @@ impl AudioInfo {
     }
 
     pub fn layout(&self) -> crate::AudioLayout {
-        from_glib(self.0.layout)
+        unsafe { from_glib(self.0.layout) }
     }
 
     pub fn flags(&self) -> crate::AudioFlags {
-        from_glib(self.0.flags)
+        unsafe { from_glib(self.0.flags) }
     }
 
     pub fn rate(&self) -> u32 {
diff --git a/gstreamer-audio/src/audio_meta.rs b/gstreamer-audio/src/audio_meta.rs
index fa3ba53b5..e8307a762 100644
--- a/gstreamer-audio/src/audio_meta.rs
+++ b/gstreamer-audio/src/audio_meta.rs
@@ -50,11 +50,11 @@ impl AudioClippingMeta {
     }
 
     pub fn get_start(&self) -> gst::GenericFormattedValue {
-        gst::GenericFormattedValue::new(from_glib(self.0.format), self.0.start as i64)
+        unsafe { gst::GenericFormattedValue::new(from_glib(self.0.format), self.0.start as i64) }
     }
 
     pub fn get_end(&self) -> gst::GenericFormattedValue {
-        gst::GenericFormattedValue::new(from_glib(self.0.format), self.0.end as i64)
+        unsafe { gst::GenericFormattedValue::new(from_glib(self.0.format), self.0.end as i64) }
     }
 }
 
diff --git a/gstreamer-audio/src/audio_ring_buffer_spec.rs b/gstreamer-audio/src/audio_ring_buffer_spec.rs
index 191fc8a5a..fa4aeea2a 100644
--- a/gstreamer-audio/src/audio_ring_buffer_spec.rs
+++ b/gstreamer-audio/src/audio_ring_buffer_spec.rs
@@ -12,7 +12,7 @@ pub struct AudioRingBufferSpec(pub(crate) GstAudioRingBufferSpec);
 
 impl AudioRingBufferSpec {
     pub fn get_type(&self) -> AudioRingBufferFormatType {
-        AudioRingBufferFormatType::from_glib(self.0.type_)
+        unsafe { AudioRingBufferFormatType::from_glib(self.0.type_) }
     }
 
     pub fn set_type(&mut self, value: AudioRingBufferFormatType) {
diff --git a/gstreamer-base/src/base_parse_frame.rs b/gstreamer-base/src/base_parse_frame.rs
index d35283a91..0713d2346 100644
--- a/gstreamer-base/src/base_parse_frame.rs
+++ b/gstreamer-base/src/base_parse_frame.rs
@@ -45,7 +45,7 @@ impl ToGlib for Overhead {
 
 impl FromGlib<i32> for Overhead {
     #[inline]
-    fn from_glib(val: i32) -> Overhead {
+    unsafe fn from_glib(val: i32) -> Overhead {
         skip_assert_initialized!();
         match val {
             0 => Overhead::None,
diff --git a/gstreamer-video/src/video_format.rs b/gstreamer-video/src/video_format.rs
index 1d71790e5..12082bfe5 100644
--- a/gstreamer-video/src/video_format.rs
+++ b/gstreamer-video/src/video_format.rs
@@ -264,7 +264,7 @@ pub enum VideoEndianness {
 }
 
 impl FromGlib<i32> for VideoEndianness {
-    fn from_glib(value: i32) -> Self {
+    unsafe fn from_glib(value: i32) -> Self {
         skip_assert_initialized!();
 
         match value {
diff --git a/gstreamer-video/src/video_format_info.rs b/gstreamer-video/src/video_format_info.rs
index 5ec00f9cb..5639a152a 100644
--- a/gstreamer-video/src/video_format_info.rs
+++ b/gstreamer-video/src/video_format_info.rs
@@ -28,7 +28,7 @@ impl VideoFormatInfo {
     }
 
     pub fn format(&self) -> crate::VideoFormat {
-        from_glib(self.0.format)
+        unsafe { from_glib(self.0.format) }
     }
 
     pub fn name<'a>(&self) -> &'a str {
@@ -40,7 +40,7 @@ impl VideoFormatInfo {
     }
 
     pub fn flags(&self) -> crate::VideoFormatFlags {
-        from_glib(self.0.flags)
+        unsafe { from_glib(self.0.flags) }
     }
 
     pub fn bits(&self) -> u32 {
@@ -84,7 +84,7 @@ impl VideoFormatInfo {
     }
 
     pub fn tile_mode(&self) -> crate::VideoTileMode {
-        from_glib(self.0.tile_mode)
+        unsafe { from_glib(self.0.tile_mode) }
     }
 
     pub fn tile_ws(&self) -> u32 {
@@ -96,7 +96,7 @@ impl VideoFormatInfo {
     }
 
     pub fn unpack_format(&self) -> crate::VideoFormat {
-        from_glib(self.0.unpack_format)
+        unsafe { from_glib(self.0.unpack_format) }
     }
 
     pub fn pack_lines(&self) -> i32 {
diff --git a/gstreamer-video/src/video_frame.rs b/gstreamer-video/src/video_frame.rs
index 2773006f7..388ed4684 100644
--- a/gstreamer-video/src/video_frame.rs
+++ b/gstreamer-video/src/video_frame.rs
@@ -45,7 +45,7 @@ impl<T> VideoFrame<T> {
     }
 
     pub fn flags(&self) -> crate::VideoFrameFlags {
-        from_glib(self.frame.flags)
+        unsafe { from_glib(self.frame.flags) }
     }
 
     pub fn id(&self) -> i32 {
@@ -420,7 +420,7 @@ impl<T> VideoFrameRef<T> {
     }
 
     pub fn flags(&self) -> crate::VideoFrameFlags {
-        from_glib(self.frame.flags)
+        unsafe { from_glib(self.frame.flags) }
     }
 
     pub fn id(&self) -> i32 {
diff --git a/gstreamer-video/src/video_info.rs b/gstreamer-video/src/video_info.rs
index 689b222cb..58c8d93d9 100644
--- a/gstreamer-video/src/video_info.rs
+++ b/gstreamer-video/src/video_info.rs
@@ -48,7 +48,7 @@ impl ToGlib for VideoColorRange {
 
 #[doc(hidden)]
 impl FromGlib<ffi::GstVideoColorRange> for VideoColorRange {
-    fn from_glib(value: ffi::GstVideoColorRange) -> Self {
+    unsafe fn from_glib(value: ffi::GstVideoColorRange) -> Self {
         skip_assert_initialized!();
         match value as i32 {
             0 => VideoColorRange::Unknown,
@@ -109,19 +109,19 @@ impl VideoColorimetry {
     }
 
     pub fn range(&self) -> crate::VideoColorRange {
-        from_glib(self.0.range)
+        unsafe { from_glib(self.0.range) }
     }
 
     pub fn matrix(&self) -> crate::VideoColorMatrix {
-        from_glib(self.0.matrix)
+        unsafe { from_glib(self.0.matrix) }
     }
 
     pub fn transfer(&self) -> crate::VideoTransferFunction {
-        from_glib(self.0.transfer)
+        unsafe { from_glib(self.0.transfer) }
     }
 
     pub fn primaries(&self) -> crate::VideoColorPrimaries {
-        from_glib(self.0.primaries)
+        unsafe { from_glib(self.0.primaries) }
     }
 }
 
@@ -209,7 +209,7 @@ impl fmt::Display for crate::VideoChromaSite {
 impl From<crate::VideoMultiviewFramePacking> for crate::VideoMultiviewMode {
     fn from(v: crate::VideoMultiviewFramePacking) -> Self {
         skip_assert_initialized!();
-        from_glib(v.to_glib())
+        unsafe { from_glib(v.to_glib()) }
     }
 }
 
@@ -221,7 +221,7 @@ impl std::convert::TryFrom<crate::VideoMultiviewMode> for crate::VideoMultiviewF
     ) -> Result<crate::VideoMultiviewFramePacking, glib::BoolError> {
         skip_assert_initialized!();
 
-        let v2 = from_glib(v.to_glib());
+        let v2 = unsafe { from_glib(v.to_glib()) };
 
         if let crate::VideoMultiviewFramePacking::__Unknown(_) = v2 {
             Err(glib::glib_bool_error!("Invalid frame packing mode"))
@@ -647,11 +647,11 @@ impl VideoInfo {
     }
 
     pub fn interlace_mode(&self) -> crate::VideoInterlaceMode {
-        from_glib(self.0.interlace_mode)
+        unsafe { from_glib(self.0.interlace_mode) }
     }
 
     pub fn flags(&self) -> crate::VideoFlags {
-        from_glib(self.0.flags)
+        unsafe { from_glib(self.0.flags) }
     }
 
     pub fn size(&self) -> usize {
@@ -663,7 +663,7 @@ impl VideoInfo {
     }
 
     pub fn chroma_site(&self) -> crate::VideoChromaSite {
-        from_glib(self.0.chroma_site)
+        unsafe { from_glib(self.0.chroma_site) }
     }
 
     pub fn colorimetry(&self) -> VideoColorimetry {
diff --git a/gstreamer-video/src/video_meta.rs b/gstreamer-video/src/video_meta.rs
index 38d060d3b..9683e19ae 100644
--- a/gstreamer-video/src/video_meta.rs
+++ b/gstreamer-video/src/video_meta.rs
@@ -123,11 +123,11 @@ impl VideoMeta {
     }
 
     pub fn get_flags(&self) -> crate::VideoFrameFlags {
-        from_glib(self.0.flags)
+        unsafe { from_glib(self.0.flags) }
     }
 
     pub fn get_format(&self) -> crate::VideoFormat {
-        from_glib(self.0.format)
+        unsafe { from_glib(self.0.format) }
     }
 
     pub fn get_id(&self) -> i32 {
@@ -339,7 +339,7 @@ impl VideoRegionOfInterestMeta {
     }
 
     pub fn get_roi_type<'a>(&self) -> &'a str {
-        glib::Quark::from_glib(self.0.roi_type).to_string()
+        unsafe { glib::Quark::from_glib(self.0.roi_type).to_string() }
     }
 
     #[cfg(feature = "v1_14")]
@@ -581,7 +581,7 @@ impl VideoCaptionMeta {
     }
 
     pub fn get_caption_type(&self) -> crate::VideoCaptionType {
-        from_glib(self.0.caption_type)
+        unsafe { from_glib(self.0.caption_type) }
     }
 
     pub fn get_data(&self) -> &[u8] {
@@ -654,11 +654,11 @@ impl VideoAFDMeta {
     }
 
     pub fn get_spec(&self) -> crate::VideoAFDSpec {
-        from_glib(self.0.spec)
+        unsafe { from_glib(self.0.spec) }
     }
 
     pub fn get_afd(&self) -> crate::VideoAFDValue {
-        from_glib(self.0.afd)
+        unsafe { from_glib(self.0.afd) }
     }
 }
 
@@ -726,7 +726,7 @@ impl VideoBarMeta {
     }
 
     pub fn is_letterbox(&self) -> bool {
-        from_glib(self.0.is_letterbox)
+        unsafe { from_glib(self.0.is_letterbox) }
     }
 
     pub fn get_bar_data1(&self) -> u32 {
diff --git a/gstreamer-video/src/video_time_code.rs b/gstreamer-video/src/video_time_code.rs
index deffb6f92..577beadf7 100644
--- a/gstreamer-video/src/video_time_code.rs
+++ b/gstreamer-video/src/video_time_code.rs
@@ -272,7 +272,7 @@ macro_rules! generic_impl {
             }
 
             pub fn get_flags(&self) -> VideoTimeCodeFlags {
-                from_glib(self.0.config.flags)
+                unsafe { from_glib(self.0.config.flags) }
             }
 
             pub fn get_latest_daily_jam(&self) -> Option<glib::DateTime> {
diff --git a/gstreamer/src/allocation_params.rs b/gstreamer/src/allocation_params.rs
index 1cf872607..4e8329a65 100644
--- a/gstreamer/src/allocation_params.rs
+++ b/gstreamer/src/allocation_params.rs
@@ -20,7 +20,7 @@ unsafe impl Sync for AllocationParams {}
 
 impl AllocationParams {
     pub fn get_flags(&self) -> MemoryFlags {
-        from_glib(self.0.flags)
+        unsafe { from_glib(self.0.flags) }
     }
 
     pub fn get_align(&self) -> usize {
diff --git a/gstreamer/src/buffer.rs b/gstreamer/src/buffer.rs
index d57998e7d..0d9caee9d 100644
--- a/gstreamer/src/buffer.rs
+++ b/gstreamer/src/buffer.rs
@@ -346,7 +346,7 @@ impl BufferRef {
     }
 
     pub fn get_pts(&self) -> ClockTime {
-        from_glib(self.0.pts)
+        unsafe { from_glib(self.0.pts) }
     }
 
     pub fn set_pts(&mut self, pts: ClockTime) {
@@ -354,7 +354,7 @@ impl BufferRef {
     }
 
     pub fn get_dts(&self) -> ClockTime {
-        from_glib(self.0.dts)
+        unsafe { from_glib(self.0.dts) }
     }
 
     pub fn set_dts(&mut self, dts: ClockTime) {
@@ -371,7 +371,7 @@ impl BufferRef {
     }
 
     pub fn get_duration(&self) -> ClockTime {
-        from_glib(self.0.duration)
+        unsafe { from_glib(self.0.duration) }
     }
 
     pub fn set_duration(&mut self, duration: ClockTime) {
diff --git a/gstreamer/src/buffer_pool.rs b/gstreamer/src/buffer_pool.rs
index 27016a1b7..eab92dc23 100644
--- a/gstreamer/src/buffer_pool.rs
+++ b/gstreamer/src/buffer_pool.rs
@@ -217,19 +217,19 @@ impl BufferPoolAcquireParams {
     }
 
     pub fn flags(&self) -> crate::BufferPoolAcquireFlags {
-        from_glib(self.0.flags)
+        unsafe { from_glib(self.0.flags) }
     }
 
     pub fn format(&self) -> crate::Format {
-        from_glib(self.0.format)
+        unsafe { from_glib(self.0.format) }
     }
 
     pub fn start(&self) -> crate::GenericFormattedValue {
-        crate::GenericFormattedValue::new(from_glib(self.0.format), self.0.start)
+        unsafe { crate::GenericFormattedValue::new(from_glib(self.0.format), self.0.start) }
     }
 
     pub fn stop(&self) -> crate::GenericFormattedValue {
-        crate::GenericFormattedValue::new(from_glib(self.0.format), self.0.stop)
+        unsafe { crate::GenericFormattedValue::new(from_glib(self.0.format), self.0.stop) }
     }
 }
 
diff --git a/gstreamer/src/clock.rs b/gstreamer/src/clock.rs
index 82f1086dc..a7b0d2f23 100644
--- a/gstreamer/src/clock.rs
+++ b/gstreamer/src/clock.rs
@@ -313,7 +313,7 @@ pub struct AtomicClockReturn(AtomicI32);
 
 impl AtomicClockReturn {
     pub fn load(&self) -> ClockReturn {
-        from_glib(self.0.load(atomic::Ordering::SeqCst))
+        unsafe { from_glib(self.0.load(atomic::Ordering::SeqCst)) }
     }
 
     pub fn store(&self, val: ClockReturn) {
@@ -321,15 +321,17 @@ impl AtomicClockReturn {
     }
 
     pub fn swap(&self, val: ClockReturn) -> ClockReturn {
-        from_glib(self.0.swap(val.to_glib(), atomic::Ordering::SeqCst))
+        unsafe { from_glib(self.0.swap(val.to_glib(), atomic::Ordering::SeqCst)) }
     }
 
     pub fn compare_and_swap(&self, current: ClockReturn, new: ClockReturn) -> ClockReturn {
-        from_glib(self.0.compare_and_swap(
-            current.to_glib(),
-            new.to_glib(),
-            atomic::Ordering::SeqCst,
-        ))
+        unsafe {
+            from_glib(self.0.compare_and_swap(
+                current.to_glib(),
+                new.to_glib(),
+                atomic::Ordering::SeqCst,
+            ))
+        }
     }
 }
 
diff --git a/gstreamer/src/clock_time.rs b/gstreamer/src/clock_time.rs
index 907521269..8c5a38a6e 100644
--- a/gstreamer/src/clock_time.rs
+++ b/gstreamer/src/clock_time.rs
@@ -192,7 +192,7 @@ impl ToGlib for ClockTime {
 
 #[doc(hidden)]
 impl FromGlib<ffi::GstClockTime> for ClockTime {
-    fn from_glib(value: ffi::GstClockTime) -> Self {
+    unsafe fn from_glib(value: ffi::GstClockTime) -> Self {
         skip_assert_initialized!();
         match value {
             ffi::GST_CLOCK_TIME_NONE => ClockTime(None),
@@ -205,7 +205,7 @@ impl FromGlib<ffi::GstClockTime> for ClockTime {
 impl<'a> glib::value::FromValueOptional<'a> for ClockTime {
     unsafe fn from_value_optional(value: &'a glib::Value) -> Option<Self> {
         <u64 as glib::value::FromValueOptional>::from_value_optional(value)
-            .map(ClockTime::from_glib)
+            .map(|x| ClockTime::from_glib(x))
     }
 }
 
diff --git a/gstreamer/src/date_time_serde.rs b/gstreamer/src/date_time_serde.rs
index 436906f35..3925ea6d8 100644
--- a/gstreamer/src/date_time_serde.rs
+++ b/gstreamer/src/date_time_serde.rs
@@ -118,7 +118,7 @@ impl TryFrom<DateTimeVariants> for Date {
         skip_assert_initialized!();
         match dt_variant {
             DateTimeVariants::YMD(y, m, d) => {
-                let month = glib::DateMonth::from_glib(m);
+                let month = unsafe { glib::DateMonth::from_glib(m) };
                 if let glib::DateMonth::__Unknown(_) = month {
                     return Err(glib::glib_bool_error!("Out of range `month` for `Date`"));
                 }
diff --git a/gstreamer/src/device_monitor.rs b/gstreamer/src/device_monitor.rs
index e5ac085bb..da1e9b7e1 100644
--- a/gstreamer/src/device_monitor.rs
+++ b/gstreamer/src/device_monitor.rs
@@ -45,10 +45,10 @@ impl ToGlib for DeviceMonitorFilterId {
 }
 
 impl FromGlib<libc::c_uint> for DeviceMonitorFilterId {
-    fn from_glib(val: libc::c_uint) -> DeviceMonitorFilterId {
+    unsafe fn from_glib(val: libc::c_uint) -> DeviceMonitorFilterId {
         skip_assert_initialized!();
         assert_ne!(val, 0);
-        DeviceMonitorFilterId(unsafe { NonZeroU32::new_unchecked(val) })
+        DeviceMonitorFilterId(NonZeroU32::new_unchecked(val))
     }
 }
 
@@ -80,7 +80,7 @@ impl<O: IsA<DeviceMonitor>> DeviceMonitorExtManual for O {
         if id == 0 {
             None
         } else {
-            Some(from_glib(id))
+            Some(unsafe { from_glib(id) })
         }
     }
 
diff --git a/gstreamer/src/element.rs b/gstreamer/src/element.rs
index 5fc9c3b47..6893daeea 100644
--- a/gstreamer/src/element.rs
+++ b/gstreamer/src/element.rs
@@ -121,10 +121,10 @@ impl ToGlib for NotifyWatchId {
 }
 
 impl FromGlib<libc::c_ulong> for NotifyWatchId {
-    fn from_glib(val: libc::c_ulong) -> NotifyWatchId {
+    unsafe fn from_glib(val: libc::c_ulong) -> NotifyWatchId {
         skip_assert_initialized!();
         assert_ne!(val, 0);
-        NotifyWatchId(unsafe { NonZeroU64::new_unchecked(val as u64) })
+        NotifyWatchId(NonZeroU64::new_unchecked(val as u64))
     }
 }
 
diff --git a/gstreamer/src/enums.rs b/gstreamer/src/enums.rs
index 058329adb..c168cc673 100644
--- a/gstreamer/src/enums.rs
+++ b/gstreamer/src/enums.rs
@@ -377,14 +377,14 @@ impl ops::Add<u32> for crate::TypeFindProbability {
 
     fn add(self, rhs: u32) -> crate::TypeFindProbability {
         let res = (self.to_glib() as u32).saturating_add(rhs);
-        from_glib(res as i32)
+        unsafe { from_glib(res as i32) }
     }
 }
 
 impl ops::AddAssign<u32> for crate::TypeFindProbability {
     fn add_assign(&mut self, rhs: u32) {
         let res = (self.to_glib() as u32).saturating_add(rhs);
-        *self = from_glib(res as i32);
+        *self = unsafe { from_glib(res as i32) };
     }
 }
 
@@ -393,14 +393,14 @@ impl ops::Sub<u32> for crate::TypeFindProbability {
 
     fn sub(self, rhs: u32) -> crate::TypeFindProbability {
         let res = (self.to_glib() as u32).saturating_sub(rhs);
-        from_glib(res as i32)
+        unsafe { from_glib(res as i32) }
     }
 }
 
 impl ops::SubAssign<u32> for crate::TypeFindProbability {
     fn sub_assign(&mut self, rhs: u32) {
         let res = (self.to_glib() as u32).saturating_sub(rhs);
-        *self = from_glib(res as i32);
+        *self = unsafe { from_glib(res as i32) };
     }
 }
 
@@ -429,14 +429,14 @@ impl ops::Add<u32> for crate::Rank {
 
     fn add(self, rhs: u32) -> crate::Rank {
         let res = (self.to_glib() as u32).saturating_add(rhs);
-        from_glib(res as i32)
+        unsafe { from_glib(res as i32) }
     }
 }
 
 impl ops::AddAssign<u32> for crate::Rank {
     fn add_assign(&mut self, rhs: u32) {
         let res = (self.to_glib() as u32).saturating_add(rhs);
-        *self = from_glib(res as i32);
+        *self = unsafe { from_glib(res as i32) };
     }
 }
 
@@ -445,14 +445,14 @@ impl ops::Sub<u32> for crate::Rank {
 
     fn sub(self, rhs: u32) -> crate::Rank {
         let res = (self.to_glib() as u32).saturating_sub(rhs);
-        from_glib(res as i32)
+        unsafe { from_glib(res as i32) }
     }
 }
 
 impl ops::SubAssign<u32> for crate::Rank {
     fn sub_assign(&mut self, rhs: u32) {
         let res = (self.to_glib() as u32).saturating_sub(rhs);
-        *self = from_glib(res as i32);
+        *self = unsafe { from_glib(res as i32) };
     }
 }
 
@@ -563,7 +563,7 @@ impl ToGlib for MessageType {
 #[doc(hidden)]
 impl FromGlib<ffi::GstMessageType> for MessageType {
     #[allow(clippy::unreadable_literal)]
-    fn from_glib(value: ffi::GstMessageType) -> Self {
+    unsafe fn from_glib(value: ffi::GstMessageType) -> Self {
         skip_assert_initialized!();
         match value {
             0 => MessageType::Unknown,
@@ -641,7 +641,7 @@ impl State {
 
         let sign = (pending - current).signum();
 
-        from_glib(current + sign)
+        unsafe { from_glib(current + sign) }
     }
 }
 
@@ -650,7 +650,7 @@ impl StateChange {
         skip_assert_initialized!();
         let current = current.to_glib();
         let next = next.to_glib();
-        from_glib((current << 3) | next)
+        unsafe { from_glib((current << 3) | next) }
     }
 
     pub fn current(self) -> State {
diff --git a/gstreamer/src/log.rs b/gstreamer/src/log.rs
index 9ea50df32..98dd9696a 100644
--- a/gstreamer/src/log.rs
+++ b/gstreamer/src/log.rs
@@ -91,7 +91,7 @@ impl DebugCategory {
     }
 
     pub fn get_threshold(self) -> crate::DebugLevel {
-        from_glib(unsafe { ffi::gst_debug_category_get_threshold(self.0.as_ptr()) })
+        unsafe { from_glib(ffi::gst_debug_category_get_threshold(self.0.as_ptr())) }
     }
 
     pub fn set_threshold(self, threshold: crate::DebugLevel) {
diff --git a/gstreamer/src/memory.rs b/gstreamer/src/memory.rs
index 986784553..d4ca4f08b 100644
--- a/gstreamer/src/memory.rs
+++ b/gstreamer/src/memory.rs
@@ -203,7 +203,7 @@ impl MemoryRef {
     }
 
     pub fn get_flags(&self) -> MemoryFlags {
-        from_glib(self.0.mini_object.flags)
+        unsafe { from_glib(self.0.mini_object.flags) }
     }
 
     pub fn copy_part(&self, offset: isize, size: Option<usize>) -> Memory {
diff --git a/gstreamer/src/meta.rs b/gstreamer/src/meta.rs
index 2e7167ba2..3d0d71d44 100644
--- a/gstreamer/src/meta.rs
+++ b/gstreamer/src/meta.rs
@@ -387,11 +387,11 @@ impl ReferenceTimestampMeta {
     }
 
     pub fn get_timestamp(&self) -> ClockTime {
-        from_glib(self.0.timestamp)
+        unsafe { from_glib(self.0.timestamp) }
     }
 
     pub fn get_duration(&self) -> ClockTime {
-        from_glib(self.0.duration)
+        unsafe { from_glib(self.0.duration) }
     }
 }
 
diff --git a/gstreamer/src/pad.rs b/gstreamer/src/pad.rs
index 5b69eaffe..2d394e234 100644
--- a/gstreamer/src/pad.rs
+++ b/gstreamer/src/pad.rs
@@ -53,10 +53,10 @@ impl ToGlib for PadProbeId {
 }
 
 impl FromGlib<libc::c_ulong> for PadProbeId {
-    fn from_glib(val: libc::c_ulong) -> PadProbeId {
+    unsafe fn from_glib(val: libc::c_ulong) -> PadProbeId {
         skip_assert_initialized!();
         assert_ne!(val, 0);
-        PadProbeId(unsafe { NonZeroU64::new_unchecked(val as u64) })
+        PadProbeId(NonZeroU64::new_unchecked(val as u64))
     }
 }
 
diff --git a/gstreamer/src/segment.rs b/gstreamer/src/segment.rs
index bfe638540..763b679f5 100644
--- a/gstreamer/src/segment.rs
+++ b/gstreamer/src/segment.rs
@@ -364,7 +364,7 @@ impl<T: FormattedValue> FormattedSegment<T> {
     }
 
     pub fn get_flags(&self) -> crate::SegmentFlags {
-        from_glib(self.0.flags)
+        unsafe { from_glib(self.0.flags) }
     }
 
     pub fn set_flags(&mut self, flags: crate::SegmentFlags) {
@@ -392,7 +392,7 @@ impl<T: FormattedValue> FormattedSegment<T> {
     }
 
     pub fn get_format(&self) -> Format {
-        from_glib(self.0.format)
+        unsafe { from_glib(self.0.format) }
     }
 
     pub fn get_base(&self) -> T {