diff --git a/basis/ui/tools/operations/operations.factor b/basis/ui/tools/operations/operations.factor
index 2aa78d66e4..5bfaee922f 100644
--- a/basis/ui/tools/operations/operations.factor
+++ b/basis/ui/tools/operations/operations.factor
@@ -98,6 +98,7 @@ UNION: definition word method-spec link vocab vocab-link ;
 
 [ word? ] \ usage. H{
     { +keyboard+ T{ key-down f { C+ } "u" } }
+    { +listener+ t }
 } define-operation
 
 [ word? ] \ fix H{