diff --git a/extra/multi-methods/tests/definitions.factor b/extra/multi-methods/tests/definitions.factor
index 888ded4155..a483a492b3 100644
--- a/extra/multi-methods/tests/definitions.factor
+++ b/extra/multi-methods/tests/definitions.factor
@@ -4,6 +4,7 @@ IN: multi-methods.tests
 
 DEFER: fake
 \ fake H{ } clone "multi-methods" set-word-prop
+<< (( -- )) \ fake set-stack-effect >>
 
 [ "fake-{ }" ] [ { } \ fake method-word-name ] unit-test