diff --git a/contrib/x11/examples/cube.factor b/contrib/x11/examples/cube.factor
index e0dc742853..fbd807ef10 100644
--- a/contrib/x11/examples/cube.factor
+++ b/contrib/x11/examples/cube.factor
@@ -1,5 +1,5 @@
 USING: kernel sequences namespaces math threads io opengl concurrency
-x xlib x11 gl concurrent-widgets ;
+x11 x gl concurrent-widgets ;
 
 SYMBOL: pval