diff --git a/extra/tools/walker/walker.factor b/extra/tools/walker/walker.factor
index aa0ea48e24..4c8eae111e 100644
--- a/extra/tools/walker/walker.factor
+++ b/extra/tools/walker/walker.factor
@@ -1,6 +1,6 @@
 ! Copyright (C) 2007 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
 IN: tools.walker
-USING: kernel sequences tools.interpreter ;
+USING: kernel sequences continuations ;
 
-: walk ( quot -- ) [ break ] swap append call ;
+: walk ( quot -- ) \ break add* call ;