diff --git a/Makefile b/Makefile
index b0385ac8..983be0b3 100644
--- a/Makefile
+++ b/Makefile
@@ -30,7 +30,7 @@ verify-vendor: ## verify if all the go.mod/go.sum files are up-to-date
 	$(eval TMPDIR := $(shell mktemp -d))
 	@cp -R ${ROOTDIR} ${TMPDIR}
 	@(cd ${TMPDIR}/garm && ${GO} mod tidy)
-	@diff -r -u -q ${ROOTDIR} ${TMPDIR}/garm
+	@diff -r -u -q ${ROOTDIR} ${TMPDIR}/garm >/dev/null 2>&1; if [ "$$?" -ne 0 ];then echo "please run: go mod tidy && go mod vendor"; exit 1; fi
 	@rm -rf ${TMPDIR}
 
 verify: verify-vendor fmtcheck