diff --git a/widget/src/gtksuperwin/gdksuperwin.c b/widget/src/gtksuperwin/gdksuperwin.c
index 11c5ec6bd691..4237a5f41dfd 100644
--- a/widget/src/gtksuperwin/gdksuperwin.c
+++ b/widget/src/gtksuperwin/gdksuperwin.c
@@ -614,6 +614,7 @@ void gdk_superwin_handle_expose (GdkSuperWin *superwin, XEvent *xevent,
       /* if the rect of the expose event is contained in the
          antiexpose then we should just drop it on the floor. */
       if (gdk_region_rect_in(antiexpose_region, &rect) == GDK_OVERLAP_RECTANGLE_IN) {
+        gdk_region_destroy(antiexpose_region);
         goto end;
       }
       gdk_region_destroy(antiexpose_region);