diff --git a/module/doc/control.php b/module/doc/control.php
index 91b307fa5f..9aabe6f7ab 100644
--- a/module/doc/control.php
+++ b/module/doc/control.php
@@ -315,7 +315,7 @@ class doc extends control
             if(!$docResult or dao::isError()) $this->send(array('result' => 'fail', 'message' => dao::getError()));
 
             $docID = $docResult['id'];
-            $files = $docResult['files'];
+            $files = isset($docResult['files']) ? $docResult['files'] : '';
             $lib   = $this->doc->getLibByID($this->post->lib);
             if($docResult['status'] == 'exists')
             {