diff --git a/apps/files/ajax/upload.php b/apps/files/ajax/upload.php
index e7823bc4ffbb4432406fbb67f5a0829daa3afba8..0909a3f07768b46c6c0d29c5ca5c7f3f72ef4ad6 100644
--- a/apps/files/ajax/upload.php
+++ b/apps/files/ajax/upload.php
@@ -41,7 +41,7 @@ foreach($files['size'] as $size) {
 	$totalSize+=$size;
 }
 if($totalSize>OC_Filesystem::free_space($dir)) {
-	OCP\JSON::error(array('data' => array( 'message' => 'Not enough space available' )));
+	OCP\JSON::error(array('data' => array( 'message' => $l->t( 'Not enough space available' ))));
 	exit();
 }