diff --git a/utils/fallbackswitch/examples/gtk_fallbackswitch.rs b/utils/fallbackswitch/examples/gtk_fallbackswitch.rs
index d5f5d8c6e..0f2957251 100644
--- a/utils/fallbackswitch/examples/gtk_fallbackswitch.rs
+++ b/utils/fallbackswitch/examples/gtk_fallbackswitch.rs
@@ -203,7 +203,7 @@ fn main() {
     gstfallbackswitch::plugin_register_static().expect("Failed to register fallbackswitch plugin");
     gstgtk4::plugin_register_static().expect("Failed to register gtk4paintablesink plugin");
 
-    let app = gtk::Application::new(None, gio::ApplicationFlags::FLAGS_NONE);
+    let app = gtk::Application::new(None::<&str>, gio::ApplicationFlags::FLAGS_NONE);
 
     app.connect_activate(create_ui);
     app.run();
diff --git a/utils/togglerecord/examples/gtk_recording.rs b/utils/togglerecord/examples/gtk_recording.rs
index e90241a74..ab5d441a3 100644
--- a/utils/togglerecord/examples/gtk_recording.rs
+++ b/utils/togglerecord/examples/gtk_recording.rs
@@ -333,7 +333,7 @@ fn main() {
     gsttogglerecord::plugin_register_static().expect("Failed to register togglerecord plugin");
     gstgtk4::plugin_register_static().expect("Failed to register gtk4paintablesink plugin");
 
-    let app = gtk::Application::new(None, gio::ApplicationFlags::FLAGS_NONE);
+    let app = gtk::Application::new(None::<&str>, gio::ApplicationFlags::FLAGS_NONE);
 
     app.connect_activate(create_ui);
     app.run();
diff --git a/video/gtk4/examples/gtksink.rs b/video/gtk4/examples/gtksink.rs
index 867dc1eaf..160ef281e 100644
--- a/video/gtk4/examples/gtksink.rs
+++ b/video/gtk4/examples/gtksink.rs
@@ -147,7 +147,7 @@ fn main() {
 
     gstgtk4::plugin_register_static().expect("Failed to register gstgtk4 plugin");
 
-    let app = gtk::Application::new(None, gio::ApplicationFlags::FLAGS_NONE);
+    let app = gtk::Application::new(None::<&str>, gio::ApplicationFlags::FLAGS_NONE);
 
     app.connect_activate(create_ui);
     app.run();