diff --git a/basis/tools/walker/walker.factor b/basis/tools/walker/walker.factor
index 45d20dbb78..2ce19220a5 100644
--- a/basis/tools/walker/walker.factor
+++ b/basis/tools/walker/walker.factor
@@ -3,7 +3,7 @@
 USING: threads kernel namespaces continuations combinators
 sequences math namespaces.private continuations.private
 concurrency.messaging quotations kernel.private words
-sequences.private assocs models models.filter arrays accessors
+sequences.private assocs models models.arrow arrays accessors
 generic generic.standard definitions make sbufs ;
 IN: tools.walker