diff --git a/entrypoint.sh b/entrypoint.sh
index 75e6f50..302ef9f 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 # Copyright (c) AVROID, Ltd., 2024
 #
 # You can not use the contents of the file in any way without
@@ -10,15 +10,15 @@
 echo "Processing event '$GITHUB_EVENT_NAME'"
 echo "List of files with absent license:"
 echo "==================================="
-if [ -e $INPUT_INPUT_FILES ]; then
+if [ -n $INPUT_INPUT_FILES ]; then
 	export err=0
     for file in $INPUT_INPUT_FILES; do
-        echo /app/addlicense -check "$1" $file | sh
+        echo /app/addlicense -check "$1" "$file" | sh
         if [ $? -ne 0]; then
             err=$?
         fi
     done
     exit $err
 else
-    echo /app/addlicense -check "$1" . | sh
+    echo /app/addlicense -check "$1" "." | sh
 fi