diff --git a/examples/src/bin/gtkvideooverlay.rs b/examples/src/bin/gtkvideooverlay.rs
index ed11ea47a..7bb64d258 100644
--- a/examples/src/bin/gtkvideooverlay.rs
+++ b/examples/src/bin/gtkvideooverlay.rs
@@ -77,7 +77,9 @@ fn set_window_handle(video_overlay: &gst_video::VideoOverlay, gdk_window: &gdk::
 
     if display_type_name == "GdkQuartzDisplay" {
         extern "C" {
-            pub fn gdk_quartz_window_get_nsview(window: *mut glib::gobject_ffi::GObject) -> *mut c_void;
+            pub fn gdk_quartz_window_get_nsview(
+                window: *mut glib::gobject_ffi::GObject,
+            ) -> *mut c_void;
         }
 
         // This is unsafe because the "window handle" we pass here is basically like a raw pointer.