--- a/src/video/gem/SDL_gemwm.c	Tue Sep 12 19:44:51 2006 +0000
+++ b/src/video/gem/SDL_gemwm.c	Tue Sep 12 19:47:40 2006 +0000
@@ -113,7 +113,11 @@
 SDL_GrabMode
 GEM_GrabInput(_THIS, SDL_GrabMode mode)
 {
-    return SDL_GRAB_OFF;
+    if (this->screen == NULL) {
+        return SDL_GRAB_OFF;
+    }
+
+    return mode;
 }
 
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