diff --git a/contrib/x11/examples/double.factor b/contrib/x11/examples/double.factor
index 038eb9b5e8..81d9444e5d 100644
--- a/contrib/x11/examples/double.factor
+++ b/contrib/x11/examples/double.factor
@@ -1,5 +1,5 @@
 USING: kernel sequences namespaces math hashtables threads io opengl
-concurrency x xlib x11 gl concurrent-widgets ;
+concurrency x11 x gl concurrent-widgets ;
 
 SYMBOL: loop-action