diff --git a/extra/delegate/delegate-tests.factor b/extra/delegate/delegate-tests.factor
index 01ef33b922..dd9a77aa21 100644
--- a/extra/delegate/delegate-tests.factor
+++ b/extra/delegate/delegate-tests.factor
@@ -1,4 +1,5 @@
 USING: delegate kernel arrays tools.test ;
+IN: temporary
 
 TUPLE: hello this that ;
 C: <hello> hello