diff --git a/lib/exe/mediamanager.php b/lib/exe/mediamanager.php
index 7044232ceedd8a65365f5e299e6a9e3bccf4ace2..c90b6db35441ad4ad7ad12c2076b22113662b70a 100644
--- a/lib/exe/mediamanager.php
+++ b/lib/exe/mediamanager.php
@@ -8,6 +8,7 @@
     require_once(DOKU_INC.'inc/init.php');
 
     global $INPUT;
+    global $lang;
     // handle passed message
     if($INPUT->str('msg1')) msg(hsc($INPUT->str('msg1')),1);
     if($INPUT->str('err')) msg(hsc($INPUT->str('err')),-1);