Index: typo3/classes/class.modulemenu.php
===================================================================
--- typo3/classes/class.modulemenu.php	(revision 4972)
+++ typo3/classes/class.modulemenu.php	(working copy)
@@ -239,7 +239,7 @@
 			}
 			$moduleLink = t3lib_div::resolveBackPath($moduleLink);
 
-			$moduleKey   = $moduleName.'_tab';
+			$moduleKey   = 'modmenu_' . $moduleName;
 			$moduleIcon  = $this->getModuleIcon($moduleKey);
 
 			if($moduleLink && $moduleNavigationFramePrefix) {
@@ -248,7 +248,7 @@
 
 			$modules[$moduleKey] = array(
 				'name'        => $moduleName,
-				'title'       => $GLOBALS['LANG']->moduleLabels['tabs'][$moduleKey],
+				'title'       => $GLOBALS['LANG']->moduleLabels['tabs'][$moduleName . '_tab'],
 				'onclick'     => 'top.goToModule(\''.$moduleName.'\');',
 				'icon'        => $moduleIcon,
 				'link'        => $moduleLink,