diff --git a/sh/lint/lint.sh b/sh/lint/lint.sh
index 9f34299..5448563 100644
--- a/sh/lint/lint.sh
+++ b/sh/lint/lint.sh
@@ -1,14 +1,17 @@
 # lint code
 rwx_lint() {
 	local path="${1}"
-	local code
+	[ -n "${path}" ] || exit 1
+	rwx_lint_clean
 	set \
 		"python" \
 		"shell"
+	local code
 	for code in "${@}"; do
 		rwx_log "${code}"
 		"rwx_lint_${code}" "${path}"
 	done
+	rwx_lint_clean
 }
 
 # clean