diff --git a/src/core/core.c b/src/core/core.c
index 9f41a3577..0c46a2f22 100644
--- a/src/core/core.c
+++ b/src/core/core.c
@@ -718,16 +718,6 @@ meta_core_set_screen_cursor (Display *xdisplay,
   meta_frame_set_screen_cursor (window->frame, cursor);
 }
 
-void
-meta_core_increment_event_serial (Display *xdisplay)
-{
-  MetaDisplay *display;
-  
-  display = meta_display_for_x_display (xdisplay);
-
-  meta_display_increment_event_serial (display);
-}
-
 void
 meta_invalidate_default_icons (void)
 {
diff --git a/src/core/core.h b/src/core/core.h
index a3321531b..4c9e58754 100644
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -193,12 +193,6 @@ void       meta_core_set_screen_cursor (Display *xdisplay,
                                         Window   frame_on_screen,
                                         MetaCursor cursor);
 
-/* Used because we ignore EnterNotify when a window is unmapped that
- * really shouldn't cause focus changes, by comparing the event serial
- * of the EnterNotify and the UnmapNotify.
- */
-void meta_core_increment_event_serial (Display *display);
-
 void meta_invalidate_default_icons (void);
 
 void meta_core_add_old_event_mask (Display     *xdisplay,