--- a/src/video/x11/SDL_x11window.c	Sun Jul 18 11:23:34 2010 -0700
+++ b/src/video/x11/SDL_x11window.c	Sun Jul 18 11:37:26 2010 -0700
@@ -670,8 +670,7 @@
         }
         /* Finally unset the transient hints if necessary */
         if (!set) {
-            /* NOTE: Does this work? */
-            XSetTransientForHint(display, w, None);
+            XDeleteProperty(display, w, XA_WM_TRANSIENT_FOR);
         }
     }