diff --git a/scripts/pre-submit b/scripts/pre-submit
index dbf990d..59ecace 100755
--- a/scripts/pre-submit
+++ b/scripts/pre-submit
@@ -5,7 +5,7 @@
 trap 'rm -rf "$BUILD"' EXIT
 
 meson format --recursive --inplace || true
-if ! git diff
+if ! git diff --exit-code
 then
   echo Your changes must meet the upstream meson style guide
   echo