diff --git a/check.sh b/check.sh
index f7c02ac..43307fc 100755
--- a/check.sh
+++ b/check.sh
@@ -22,7 +22,7 @@ format_diff() {
 	# Invoke clang-format with dry run and formatting error output
 	if [[ $CLANG_FORMAT_VERSION -gt "9" ]]; then
 		local_format="$(docker run -i -v "$(pwd)":"$(pwd)" -w "$(pwd)" ghcr.io/jidicula/clang-format:"$CLANG_FORMAT_VERSION" -n --Werror --style=file --fallback-style="$FALLBACK_STYLE" "${filepath}")"
-	else
+	else # Versions below 9 don't have dry run
 		formatted="$(docker run -i -v "$(pwd)":"$(pwd)" -w "$(pwd)" ghcr.io/jidicula/clang-format:"$CLANG_FORMAT_VERSION" --style=file --fallback-style="$FALLBACK_STYLE" "${filepath}")"
 		local_format="$(diff -q <(cat "${filepath}") <(echo "${formatted}"))"
 	fi