diff --git a/gstreamer-player/src/subclass/player_video_renderer.rs b/gstreamer-player/src/subclass/player_video_renderer.rs
index 9b6c14b8c..229d4431b 100644
--- a/gstreamer-player/src/subclass/player_video_renderer.rs
+++ b/gstreamer-player/src/subclass/player_video_renderer.rs
@@ -16,8 +16,6 @@ unsafe impl<T: PlayerVideoRendererImpl> IsImplementable<T> for PlayerVideoRender
 
         iface.create_video_sink = Some(video_renderer_create_video_sink::<T>);
     }
-
-    fn instance_init(_instance: &mut glib::subclass::InitializingObject<T>) {}
 }
 
 pub trait PlayerVideoRendererImplExt: ObjectSubclass {
diff --git a/gstreamer/src/subclass/child_proxy.rs b/gstreamer/src/subclass/child_proxy.rs
index 54f6a0c07..6ebe75014 100644
--- a/gstreamer/src/subclass/child_proxy.rs
+++ b/gstreamer/src/subclass/child_proxy.rs
@@ -124,8 +124,6 @@ unsafe impl<T: ChildProxyImpl> IsImplementable<T> for ChildProxy {
         iface.child_added = Some(child_proxy_child_added::<T>);
         iface.child_removed = Some(child_proxy_child_removed::<T>);
     }
-
-    fn instance_init(_instance: &mut glib::subclass::InitializingObject<T>) {}
 }
 
 unsafe extern "C" fn child_proxy_get_child_by_name<T: ChildProxyImpl>(
diff --git a/gstreamer/src/subclass/preset.rs b/gstreamer/src/subclass/preset.rs
index 2c3ca85d4..5dc8a6464 100644
--- a/gstreamer/src/subclass/preset.rs
+++ b/gstreamer/src/subclass/preset.rs
@@ -6,8 +6,4 @@ use crate::Preset;
 
 pub trait PresetImpl: super::element::ElementImpl {}
 
-unsafe impl<T: PresetImpl> IsImplementable<T> for Preset {
-    fn interface_init(_iface: &mut glib::Interface<Self>) {}
-
-    fn instance_init(_instance: &mut glib::subclass::InitializingObject<T>) {}
-}
+unsafe impl<T: PresetImpl> IsImplementable<T> for Preset {}
diff --git a/gstreamer/src/subclass/tag_setter.rs b/gstreamer/src/subclass/tag_setter.rs
index b7b9153a3..b2b1fe062 100644
--- a/gstreamer/src/subclass/tag_setter.rs
+++ b/gstreamer/src/subclass/tag_setter.rs
@@ -6,7 +6,4 @@ use crate::TagSetter;
 
 pub trait TagSetterImpl: super::element::ElementImpl {}
 
-unsafe impl<T: TagSetterImpl> IsImplementable<T> for TagSetter {
-    fn interface_init(_iface: &mut glib::Interface<Self>) {}
-    fn instance_init(_instance: &mut glib::subclass::InitializingObject<T>) {}
-}
+unsafe impl<T: TagSetterImpl> IsImplementable<T> for TagSetter {}
diff --git a/gstreamer/src/subclass/uri_handler.rs b/gstreamer/src/subclass/uri_handler.rs
index c17656f06..83ab1c3ad 100644
--- a/gstreamer/src/subclass/uri_handler.rs
+++ b/gstreamer/src/subclass/uri_handler.rs
@@ -102,8 +102,6 @@ unsafe impl<T: URIHandlerImpl> IsImplementable<T> for URIHandler {
         iface.get_uri = Some(uri_handler_get_uri::<T>);
         iface.set_uri = Some(uri_handler_set_uri::<T>);
     }
-
-    fn instance_init(_instance: &mut glib::subclass::InitializingObject<T>) {}
 }
 
 unsafe extern "C" fn uri_handler_get_type<T: URIHandlerImpl>(