diff --git a/gdk/quartz/gdkdevice-core.c b/gdk/quartz/gdkdevice-core.c
index 25f9a1e479..9e83d5f60d 100644
--- a/gdk/quartz/gdkdevice-core.c
+++ b/gdk/quartz/gdkdevice-core.c
@@ -86,6 +86,7 @@ gdk_device_core_class_init (GdkDeviceCoreClass *klass)
   device_class->ungrab = gdk_device_core_ungrab;
   device_class->window_at_position = gdk_device_core_window_at_position;
   device_class->select_window_events = gdk_device_core_select_window_events;
+  device_class->check_extension_events = _gdk_quartz_device_check_extension_events;
 }
 
 static void
@@ -303,7 +304,13 @@ static void
 gdk_device_core_ungrab (GdkDevice *device,
                         guint32    time_)
 {
-  /* Should remain empty */
+  GdkDeviceGrabInfo *grab;
+
+  grab = _gdk_display_get_last_device_grab (_gdk_display, device);
+  if (grab)
+    grab->serial_end = 0;
+
+  _gdk_display_device_grab_update (_gdk_display, device, 0);
 }
 
 static GdkWindow *
diff --git a/gdk/quartz/gdkdevicemanager-core.h b/gdk/quartz/gdkdevicemanager-core.h
index 0a337fcd00..f3917a379b 100644
--- a/gdk/quartz/gdkdevicemanager-core.h
+++ b/gdk/quartz/gdkdevicemanager-core.h
@@ -20,7 +20,7 @@
 #ifndef __GDK_DEVICE_MANAGER_CORE_H__
 #define __GDK_DEVICE_MANAGER_CORE_H__
 
-#include <gdk/gdkdevicemanager.h>
+#include <gdk/gdkdevicemanagerprivate.h>
 
 G_BEGIN_DECLS
 
diff --git a/gdk/quartz/gdkevents-quartz.c b/gdk/quartz/gdkevents-quartz.c
index 48577e22b9..83f6b7ad33 100644
--- a/gdk/quartz/gdkevents-quartz.c
+++ b/gdk/quartz/gdkevents-quartz.c
@@ -74,49 +74,6 @@ gdk_events_pending (void)
 	  (_gdk_quartz_event_loop_check_pending ()));
 }
 
-void
-gdk_device_ungrab (GdkDevice *device,
-                   guint32    time_)
-{
-  GdkDeviceGrabInfo *grab;
-
-  grab = _gdk_display_get_last_device_grab (_gdk_display, device);
-  if (grab)
-    grab->serial_end = 0;
-
-  _gdk_display_device_grab_update (_gdk_display, device, 0);
-}
-
-GdkGrabStatus
-_gdk_windowing_device_grab (GdkDevice    *device,
-                            GdkWindow    *window,
-                            GdkWindow    *native,
-                            gboolean      owner_events,
-                            GdkEventMask  event_mask,
-                            GdkWindow    *confine_to,
-                            GdkCursor    *cursor,
-                            guint32       time)
-{
-  g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
-  g_return_val_if_fail (confine_to == NULL || GDK_IS_WINDOW (confine_to), 0);
-
-  if (!window || GDK_WINDOW_DESTROYED (window))
-    return GDK_GRAB_NOT_VIEWABLE;
-
-  _gdk_display_add_device_grab (_gdk_display,
-                                device,
-                                window,
-                                native,
-                                GDK_OWNERSHIP_NONE,
-                                owner_events,
-                                event_mask,
-                                0,
-                                time,
-                                FALSE);
-
-  return GDK_GRAB_SUCCESS;
-}
-
 static void
 break_all_grabs (guint32 time)
 {
diff --git a/gdk/quartz/gdkinput.c b/gdk/quartz/gdkinput.c
index bbd9291201..fc7d73fda7 100644
--- a/gdk/quartz/gdkinput.c
+++ b/gdk/quartz/gdkinput.c
@@ -199,7 +199,7 @@ _gdk_input_window_destroy (GdkWindow *window)
 }
 
 void
-_gdk_input_check_extension_events (GdkDevice *device)
+_gdk_quartz_device_check_extension_events (GdkDevice *device)
 {
 }
 
diff --git a/gdk/quartz/gdkprivate-quartz.h b/gdk/quartz/gdkprivate-quartz.h
index 0608d4e76c..890e10c13a 100644
--- a/gdk/quartz/gdkprivate-quartz.h
+++ b/gdk/quartz/gdkprivate-quartz.h
@@ -195,5 +195,7 @@ gboolean    _gdk_quartz_screen_get_setting              (GdkScreen   *screen,
                                                          const gchar *name,
                                                          GValue      *value);
 
+void _gdk_quartz_device_check_extension_events (GdkDevice *device);
+
 
 #endif /* __GDK_PRIVATE_QUARTZ_H__ */