diff --git a/modules/ve2/dm/ve.dm.DocumentSynchronizer.js b/modules/ve2/dm/ve.dm.DocumentSynchronizer.js
index cc3239df98..203c5054e3 100644
--- a/modules/ve2/dm/ve.dm.DocumentSynchronizer.js
+++ b/modules/ve2/dm/ve.dm.DocumentSynchronizer.js
@@ -14,6 +14,7 @@
  * 
  * @class
  * @constructor
+ * @param {ve.dm.Document} doc Document to synchronize
  */
 ve.dm.DocumentSynchronizer = function( doc ) {
 	// Properties