diff --git a/modules/ve/dm/ve.dm.InternalList.js b/modules/ve/dm/ve.dm.InternalList.js
index 8bd1cc5497..88dd1f052c 100644
--- a/modules/ve/dm/ve.dm.InternalList.js
+++ b/modules/ve/dm/ve.dm.InternalList.js
@@ -29,7 +29,9 @@ ve.dm.InternalList = function VeDmInternalList( doc ) {
 	this.nextUniqueNumber = 0;
 
 	// Event handlers
-	this.document.connect( this, { 'transact': 'onTransact' } );
+	if ( doc ) {
+		doc.connect( this, { 'transact': 'onTransact' } );
+	}
 };
 
 /* Inheritance */