Index: /CKEditor/branches/prototype/_source/core/editor.js
===================================================================
--- /CKEditor/branches/prototype/_source/core/editor.js	(revision 2995)
+++ /CKEditor/branches/prototype/_source/core/editor.js	(revision 2996)
@@ -384,5 +384,5 @@
 			var eventData = this._.data;
 
-			if ( !eventData )
+			if ( typeof eventData != 'string' )
 			{
 				var element = this.element;