diff --git a/mk2rbc/mk2rbc_test.go b/mk2rbc/mk2rbc_test.go
index 96132cc..8cd3937 100644
--- a/mk2rbc/mk2rbc_test.go
+++ b/mk2rbc/mk2rbc_test.go
@@ -773,8 +773,8 @@
 
 def init(g, handle):
   cfg = rblf.cfg(handle)
-  rblf.enforce_product_packages_exist("")
-  rblf.enforce_product_packages_exist("foo")
+  rblf.enforce_product_packages_exist(handle, "")
+  rblf.enforce_product_packages_exist(handle, "foo")
   rblf.require_artifacts_in_path(handle, "foo", "bar")
   rblf.require_artifacts_in_path_relaxed(handle, "foo", "bar")
   rblf.mkdist_for_goals(g, "goal", "from:to")