diff --git a/scripts/git_clang-format_hook.sh b/scripts/git_clang-format_hook.sh
index fd3b83ba8..63fb6f571 100755
--- a/scripts/git_clang-format_hook.sh
+++ b/scripts/git_clang-format_hook.sh
@@ -43,11 +43,11 @@ check_clang_format() {
   else
     echo "SETUP ERROR: no git-clang-format executable found, or it is not executable"
     echo "$help"
-    exit 1
+    return 1
   fi
 }
 
-check_clang_format || $(apt-get update; apt-get install -y clang-format)
+check_clang_format || (apt-get update; apt-get install -y clang-format)
 
 readonly out=$(git clang-format --style=file -v)