diff --git a/gstreamer-audio/src/audio_format.rs b/gstreamer-audio/src/audio_format.rs
index 30642c5a8..0030e8730 100644
--- a/gstreamer-audio/src/audio_format.rs
+++ b/gstreamer-audio/src/audio_format.rs
@@ -118,14 +118,17 @@ impl crate::AudioFormat {
     }
 
     pub fn to_str<'a>(self) -> &'a str {
-        if self == crate::AudioFormat::Unknown {
+        if self == Self::Unknown {
             return "UNKNOWN";
         }
-
         unsafe {
-            CStr::from_ptr(ffi::gst_audio_format_to_string(self.to_glib()))
-                .to_str()
-                .unwrap()
+            CStr::from_ptr(
+                ffi::gst_audio_format_to_string(self.to_glib())
+                    .as_ref()
+                    .expect("gst_audio_format_to_string returned NULL"),
+            )
+            .to_str()
+            .expect("gst_audio_format_to_string returned an invalid string")
         }
     }
 
diff --git a/gstreamer-video/src/video_format.rs b/gstreamer-video/src/video_format.rs
index 82cf399a0..ff506d296 100644
--- a/gstreamer-video/src/video_format.rs
+++ b/gstreamer-video/src/video_format.rs
@@ -313,14 +313,17 @@ impl crate::VideoFormat {
     }
 
     pub fn to_str<'a>(self) -> &'a str {
-        if self == crate::VideoFormat::Unknown {
+        if self == Self::Unknown {
             return "UNKNOWN";
         }
-
         unsafe {
-            CStr::from_ptr(ffi::gst_video_format_to_string(self.to_glib()))
-                .to_str()
-                .unwrap()
+            CStr::from_ptr(
+                ffi::gst_video_format_to_string(self.to_glib())
+                    .as_ref()
+                    .expect("gst_video_format_to_string returned NULL"),
+            )
+            .to_str()
+            .expect("gst_video_format_to_string returned an invalid string")
         }
     }
 
diff --git a/gstreamer-video/src/video_info.rs b/gstreamer-video/src/video_info.rs
index d90257104..02a3e66c1 100644
--- a/gstreamer-video/src/video_info.rs
+++ b/gstreamer-video/src/video_info.rs
@@ -935,10 +935,17 @@ impl glib::translate::FromGlibPtrFull<*mut ffi::GstVideoInfo> for VideoInfo {
 #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_12")))]
 impl crate::VideoFieldOrder {
     pub fn to_str<'a>(self) -> &'a str {
+        if self == Self::Unknown {
+            return "UNKNOWN";
+        }
         unsafe {
-            CStr::from_ptr(ffi::gst_video_field_order_to_string(self.to_glib()))
-                .to_str()
-                .unwrap()
+            CStr::from_ptr(
+                ffi::gst_video_field_order_to_string(self.to_glib())
+                    .as_ref()
+                    .expect("gst_video_field_order_to_string returned NULL"),
+            )
+            .to_str()
+            .expect("gst_video_field_order_to_string returned an invalid string")
         }
     }
 }