diff --git a/utils/fallbackswitch/src/fallbacksrc/imp.rs b/utils/fallbackswitch/src/fallbacksrc/imp.rs
index 49b4e012..9419e558 100644
--- a/utils/fallbackswitch/src/fallbacksrc/imp.rs
+++ b/utils/fallbackswitch/src/fallbacksrc/imp.rs
@@ -893,7 +893,9 @@ impl FallbackSrc {
             .expect("No audiotestsrc found");
         input.add_many(&[&audiotestsrc]).unwrap();
 
-        audiotestsrc.set_property_from_str("wave", "silence");
+        audiotestsrc
+            .set_property_from_str("wave", "silence")
+            .unwrap();
         audiotestsrc.set_property("is-live", &true).unwrap();
 
         let srcpad = audiotestsrc.static_pad("src").unwrap();
diff --git a/utils/fallbackswitch/src/fallbacksrc/video_fallback/imp.rs b/utils/fallbackswitch/src/fallbacksrc/video_fallback/imp.rs
index 1ccb4fd9..046edde4 100644
--- a/utils/fallbackswitch/src/fallbacksrc/video_fallback/imp.rs
+++ b/utils/fallbackswitch/src/fallbacksrc/video_fallback/imp.rs
@@ -420,7 +420,9 @@ impl VideoFallbackSource {
                         .expect("No videotestsrc found");
                 source.add_many(&[&videotestsrc]).unwrap();
 
-                videotestsrc.set_property_from_str("pattern", "black");
+                videotestsrc
+                    .set_property_from_str("pattern", "black")
+                    .unwrap();
                 videotestsrc.set_property("is-live", &true).unwrap();
 
                 videotestsrc.static_pad("src").unwrap()
diff --git a/utils/togglerecord/examples/gtk_recording.rs b/utils/togglerecord/examples/gtk_recording.rs
index 3db29856..4491c8b7 100644
--- a/utils/togglerecord/examples/gtk_recording.rs
+++ b/utils/togglerecord/examples/gtk_recording.rs
@@ -34,7 +34,7 @@ fn create_pipeline() -> (
 
     let video_src = gst::ElementFactory::make("videotestsrc", None).unwrap();
     video_src.set_property("is-live", &true).unwrap();
-    video_src.set_property_from_str("pattern", "ball");
+    video_src.set_property_from_str("pattern", "ball").unwrap();
 
     let timeoverlay = gst::ElementFactory::make("timeoverlay", None).unwrap();
     timeoverlay
@@ -68,7 +68,7 @@ fn create_pipeline() -> (
 
     let audio_src = gst::ElementFactory::make("audiotestsrc", None).unwrap();
     audio_src.set_property("is-live", &true).unwrap();
-    audio_src.set_property_from_str("wave", "ticks");
+    audio_src.set_property_from_str("wave", "ticks").unwrap();
 
     let audio_tee = gst::ElementFactory::make("tee", None).unwrap();
     let audio_queue1 = gst::ElementFactory::make("queue", None).unwrap();