Index: /CKEditor/trunk/_source/plugins/dialog/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/dialog/plugin.js	(revision 3444)
+++ /CKEditor/trunk/_source/plugins/dialog/plugin.js	(revision 3445)
@@ -2167,5 +2167,5 @@
 			tabId = cursor.getAttribute( 'name' );
 			// Avoid duplicate select.
-			if ( !this._.dialog._.currentTabId == tabId )
+			if ( this._.dialog._.currentTabId != tabId )
 				this._.dialog.selectPage( tabId );
 			return this;