diff --git a/gstreamer-app/src/app_sink.rs b/gstreamer-app/src/app_sink.rs
index cd68bcaec..76470e665 100644
--- a/gstreamer-app/src/app_sink.rs
+++ b/gstreamer-app/src/app_sink.rs
@@ -290,7 +290,7 @@ impl AppSink {
     pub fn set_callbacks(&self, callbacks: AppSinkCallbacks) {
         use once_cell::sync::Lazy;
         static SET_ONCE_QUARK: Lazy<glib::Quark> =
-            Lazy::new(|| glib::Quark::from_string("gstreamer-rs-app-sink-callbacks"));
+            Lazy::new(|| glib::Quark::from_str("gstreamer-rs-app-sink-callbacks"));
 
         unsafe {
             let sink = self.to_glib_none().0;
diff --git a/gstreamer-app/src/app_src.rs b/gstreamer-app/src/app_src.rs
index f002fc8a2..58e78e142 100644
--- a/gstreamer-app/src/app_src.rs
+++ b/gstreamer-app/src/app_src.rs
@@ -238,7 +238,7 @@ impl AppSrc {
     pub fn set_callbacks(&self, callbacks: AppSrcCallbacks) {
         use once_cell::sync::Lazy;
         static SET_ONCE_QUARK: Lazy<glib::Quark> =
-            Lazy::new(|| glib::Quark::from_string("gstreamer-rs-app-src-callbacks"));
+            Lazy::new(|| glib::Quark::from_str("gstreamer-rs-app-src-callbacks"));
 
         unsafe {
             let src = self.to_glib_none().0;
diff --git a/gstreamer-player/src/subclass/player_video_renderer.rs b/gstreamer-player/src/subclass/player_video_renderer.rs
index aa96ad696..e67a232c7 100644
--- a/gstreamer-player/src/subclass/player_video_renderer.rs
+++ b/gstreamer-player/src/subclass/player_video_renderer.rs
@@ -58,7 +58,7 @@ unsafe extern "C" fn video_renderer_create_video_sink<T: PlayerVideoRendererImpl
 ) -> *mut gst::ffi::GstElement {
     use once_cell::sync::Lazy;
     static VIDEO_SINK_QUARK: Lazy<glib::Quark> =
-        Lazy::new(|| glib::Quark::from_string("gstreamer-rs-player-video-sink"));
+        Lazy::new(|| glib::Quark::from_str("gstreamer-rs-player-video-sink"));
 
     let instance = &*(video_renderer as *mut T::Instance);
     let imp = instance.imp();
diff --git a/gstreamer-rtsp-server/src/subclass/rtsp_media_factory.rs b/gstreamer-rtsp-server/src/subclass/rtsp_media_factory.rs
index e507d8f07..cf2a92ad8 100644
--- a/gstreamer-rtsp-server/src/subclass/rtsp_media_factory.rs
+++ b/gstreamer-rtsp-server/src/subclass/rtsp_media_factory.rs
@@ -284,7 +284,7 @@ unsafe extern "C" fn factory_create_pipeline<T: RTSPMediaFactoryImpl>(
     use once_cell::sync::Lazy;
 
     static PIPELINE_QUARK: Lazy<glib::Quark> =
-        Lazy::new(|| glib::Quark::from_string("gstreamer-rs-rtsp-media-pipeline"));
+        Lazy::new(|| glib::Quark::from_str("gstreamer-rs-rtsp-media-pipeline"));
 
     let instance = &*(ptr as *mut T::Instance);
     let imp = instance.imp();
diff --git a/gstreamer-video/src/video_meta.rs b/gstreamer-video/src/video_meta.rs
index ade287562..baed1f68a 100644
--- a/gstreamer-video/src/video_meta.rs
+++ b/gstreamer-video/src/video_meta.rs
@@ -354,7 +354,7 @@ impl VideoRegionOfInterestMeta {
 
     #[doc(alias = "get_roi_type")]
     pub fn roi_type<'a>(&self) -> &'a str {
-        unsafe { glib::Quark::from_glib(self.0.roi_type).to_string() }
+        unsafe { glib::Quark::from_glib(self.0.roi_type).as_str() }
     }
 
     #[cfg(feature = "v1_14")]
diff --git a/gstreamer/src/bus.rs b/gstreamer/src/bus.rs
index 1e8489a3e..daa00725b 100644
--- a/gstreamer/src/bus.rs
+++ b/gstreamer/src/bus.rs
@@ -191,7 +191,7 @@ impl Bus {
     {
         use once_cell::sync::Lazy;
         static SET_ONCE_QUARK: Lazy<glib::Quark> =
-            Lazy::new(|| glib::Quark::from_string("gstreamer-rs-sync-handler"));
+            Lazy::new(|| glib::Quark::from_str("gstreamer-rs-sync-handler"));
 
         unsafe {
             let bus = self.to_glib_none().0;
diff --git a/gstreamer/src/structure.rs b/gstreamer/src/structure.rs
index 0b1286941..787ba5a3d 100644
--- a/gstreamer/src/structure.rs
+++ b/gstreamer/src/structure.rs
@@ -389,7 +389,7 @@ impl StructureRef {
     where
         <<T as FromValue<'a>>::Checker as glib::value::ValueTypeChecker>::Error: GlibValueError,
     {
-        let name = glib::Quark::from_string(name);
+        let name = glib::Quark::from_str(name);
         self.get_by_quark(name)
     }
 
@@ -398,14 +398,14 @@ impl StructureRef {
     where
         <<T as FromValue<'a>>::Checker as glib::value::ValueTypeChecker>::Error: GlibValueError,
     {
-        let name = glib::Quark::from_string(name);
+        let name = glib::Quark::from_str(name);
         self.get_optional_by_quark(name)
     }
 
     #[doc(alias = "get_value")]
     #[doc(alias = "gst_structure_get_value")]
     pub fn value(&self, name: &str) -> Result<&SendValue, GetError> {
-        let name = glib::Quark::from_string(name);
+        let name = glib::Quark::from_str(name);
         self.value_by_quark(name)
     }
 
@@ -416,7 +416,7 @@ impl StructureRef {
     {
         self.value_by_quark(name)?
             .get()
-            .map_err(|err| GetError::from_value_get_error(name.to_string(), err))
+            .map_err(|err| GetError::from_value_get_error(name.as_str(), err))
     }
 
     #[doc(alias = "gst_structure_id_get")]
@@ -431,7 +431,7 @@ impl StructureRef {
             .ok()
             .map(|v| v.get())
             .transpose()
-            .map_err(|err| GetError::from_value_get_error(name.to_string(), err))
+            .map_err(|err| GetError::from_value_get_error(name.as_str(), err))
     }
 
     #[doc(alias = "gst_structure_id_get_value")]
@@ -440,7 +440,7 @@ impl StructureRef {
             let value = ffi::gst_structure_id_get_value(&self.0, name.into_glib());
 
             if value.is_null() {
-                return Err(GetError::new_field_not_found(name.to_string()));
+                return Err(GetError::new_field_not_found(name.as_str()));
             }
 
             Ok(&*(value as *const SendValue))