diff --git a/src/Stash/Utilities.php b/src/Stash/Utilities.php
index 96e8dc66..dc8ed961 100644
--- a/src/Stash/Utilities.php
+++ b/src/Stash/Utilities.php
@@ -211,7 +211,7 @@ public static function normalizeKeys($keys, $hash = 'md5')
      * @throws Exception\RuntimeException
      * @throws Exception\InvalidArgumentException
      */
-    public static function checkFileSystemPermissions($path, string $permissions)
+    public static function checkFileSystemPermissions($path, int $permissions)
     {
         if (!isset($path)) {
             throw new RuntimeException('Cache path was not set correctly.');