diff --git a/Makefile b/Makefile
index 67d1c7e7..d370e4e3 100755
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,7 @@ chartlint:
 .PHONY: chart-bump-version
 chart-bump-version:
 	@set -e; \
-	if [ ! -z "$(CHART)" ]; then\
+	if [ -z "$(CHART)" ]; then\
 		echo "no chart specified"; \
 		exit 1; \
 	fi; \