1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 56fa863c8e..1fca897d05 100644
--- a/Makefile
+++ b/Makefile
@@ -395,7 +395,7 @@ css:
 	npx postcss --use autoprefixer --no-map --replace public/css/*
 
 	@diff=$$(git diff public/css/*); \
-	if ([ ! -z "$CI" ] && [ -n "$$diff" ]); then \
+	if ([ -n "$$CI" ] && [ -n "$$diff" ]); then \
 		echo "Generated files in public/css have changed, please commit the result:"; \
 		echo "$${diff}"; \
 		exit 1; \