diff --git a/mk/test.mk b/mk/test.mk
index 88ba9f9d..3d0674d9 100644
--- a/mk/test.mk
+++ b/mk/test.mk
@@ -50,7 +50,7 @@ check-mockgen:
 realtest: _mocks ; go test $(TEST_ARGS) $(GOPKG)
 .PHONY: realtest
 
-ifdef ${{ env.CITEST }}
+ifdef (${{env.CITEST}},on)
 	COPYRIGHT_FLAGS += --no-year-check
 endif