diff --git a/src/Stash/Driver/FileSystem.php b/src/Stash/Driver/FileSystem.php
index 442b7907..33670e1c 100644
--- a/src/Stash/Driver/FileSystem.php
+++ b/src/Stash/Driver/FileSystem.php
@@ -321,6 +321,11 @@ protected function makePath($key = null)
     public function clear($key = null)
     {
         $path = $this->makePath($key);
+
+        if($key === null) {
+            return Utilities::deleteRecursive($path, false);
+        }
+
         if (is_file($path)) {
             $return = true;
             unlink($path);