diff --git a/Makefile b/Makefile
index ed2092b53..64e27ba40 100644
--- a/Makefile
+++ b/Makefile
@@ -77,7 +77,7 @@ test-cover-html: ## Generate test coverage report
 	go tool cover -html=coverage-all.out
 
 check-vendor: ## Verify that vendored packages match git HEAD
-	@git diff-index --quiet HEAD || echo "check-vendor target failed: vendored packages out of sync" && echo && git diff vendor/ && exit 1
+	@git diff-index --quiet HEAD vendor/ || (echo "check-vendor target failed: vendored packages out of sync" && echo && git diff vendor/ && exit 1)
 
 help:
 	@grep -E '^[a-zA-Z0-9_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'