diff --git a/unix/xserver/hw/vnc/XserverDesktop.cc b/unix/xserver/hw/vnc/XserverDesktop.cc
index a2aba30..9194140 100644
--- a/unix/xserver/hw/vnc/XserverDesktop.cc
+++ b/unix/xserver/hw/vnc/XserverDesktop.cc
@@ -267,7 +267,7 @@
 			DixReadAccess);
 
   /* Handle suspicious conditions */
-  assert(i != Success);
+  assert(i == Success);
 
   cmap = (ColormapPtr) retval;
 }