diff --git a/basis/io/monitors/recursive/recursive-tests.factor b/basis/io/monitors/recursive/recursive-tests.factor
index 42c1a30d0d..5ad6e717f6 100644
--- a/basis/io/monitors/recursive/recursive-tests.factor
+++ b/basis/io/monitors/recursive/recursive-tests.factor
@@ -33,7 +33,7 @@ M: mock-io-backend link-info
 
 [ ] [
     mock-io-backend io-backend [
-        "" resource-path <mailbox> <recursive-monitor> dispose
+        "resource:core/io" resource-path <mailbox> <recursive-monitor> dispose
     ] with-variable
 ] unit-test