Index: typo3/js/extjs/viewport.js
===================================================================
--- typo3/js/extjs/viewport.js	(revision 7352)
+++ typo3/js/extjs/viewport.js	(working copy)
@@ -80,13 +80,17 @@
 	 * @param configuration object configuration of the viewport
 	 * @return void
 	 */
-	initComponent: function(configuration) {
+	initComponent: function() {
+		//adjust the width of module menu
+		this.initialConfig.items[1].width = TYPO3.configuration.moduleMenuWidth;
+		//call parent constructor
 		TYPO3.Viewport.superclass.initComponent.apply(this, arguments);
 
 		this.ContentContainer = Ext.ComponentMgr.get('typo3-contentContainer');
 		this.NavigationContainer = Ext.ComponentMgr.get('typo3-navigationContainer');
 		this.Toolbar = Ext.ComponentMgr.get('typo3-toolbar');
 		this.ModuleMenuContainer = Ext.ComponentMgr.get('typo3-module-menu');
+
 	},
 
 	/**
Index: typo3/js/extjs/viewportConfiguration.js
===================================================================
--- typo3/js/extjs/viewportConfiguration.js	(revision 7352)
+++ typo3/js/extjs/viewportConfiguration.js	(working copy)
@@ -44,7 +44,7 @@
 		region: 'west',
 		id: 'typo3-module-menu',
 		contentEl: 'typo3-side-menu',
-		width: TYPO3.configuration.moduleMenuWidth,
+		width: 159,
 		anchor: '100% 100%',
 		border: false
 	}, {
@@ -74,4 +74,4 @@
 			border: false
 		}]
 	}]
-};
+};
\ No newline at end of file