diff --git a/hw/xwin/winwin32rootless.c b/hw/xwin/winwin32rootless.c
index d9e71c04d..91399c248 100644
--- a/hw/xwin/winwin32rootless.c
+++ b/hw/xwin/winwin32rootless.c
@@ -551,7 +551,7 @@ winMWExtWMRestackFrame (RootlessFrameID wid, RootlessFrameID nextWid)
   winDebug ("winMWExtWMRestackFrame (%08x)\n", (int) pRLWinPriv);
 #endif
 
-  if (pScreenPriv->fRestacking) return;
+  if (pScreenPriv && pScreenPriv->fRestacking) return;
 
   if (pScreenPriv) pScreenInfo = pScreenPriv->pScreenInfo;