diff --git a/pre-commit b/pre-commit
index 95299e4..1308f40 100755
--- a/pre-commit
+++ b/pre-commit
@@ -20,8 +20,8 @@ git status -zu | while read -rd '' xy filename; do
   fi
 
   if [[ $filename = *.sh ]] || is_a "$filename" bash; then
-    if has shellcheck; then
-      shellcheck -s bash "$filename"
+    if has shellcheck && ! shellcheck -s bash "$filename"; then
+    	exit 1
     fi
   fi
 done