diff --git a/randr/rrcrtc.c b/randr/rrcrtc.c
index c237f03e61..c43163706d 100644
--- a/randr/rrcrtc.c
+++ b/randr/rrcrtc.c
@@ -233,7 +233,7 @@ RRCrtcNotify (RRCrtcPtr	    crtc,
 	RRTransformCopy (&crtc->client_current_transform, transform);
 	RRCrtcChanged (crtc, TRUE);
     }
-    if (crtc->changed)
+    if (crtc->changed && mode)
     {
 	RRTransformCompute (x, y,
 			    mode->mode.width, mode->mode.height,