Index: typo3/sysext/tslib/class.tslib_pagegen.php
===================================================================
--- typo3/sysext/tslib/class.tslib_pagegen.php	(Revision 6159)
+++ typo3/sysext/tslib/class.tslib_pagegen.php	(Arbeitskopie)
@@ -483,14 +483,15 @@
 
 		if ($GLOBALS['TSFE']->pSetup['shortcutIcon']) {
 			$favIcon = t3lib_div::getIndpEnv('TYPO3_SITE_URL') . $GLOBALS['TSFE']->tmpl->getFileName($GLOBALS['TSFE']->pSetup['shortcutIcon']);
-			$iconMimeType = '';
+			$favIconPath = PATH_site . $GLOBALS['TSFE']->tmpl->getFileName($GLOBALS['TSFE']->pSetup['shortcutIcon']);
+			$iconMimeType = ' type="image/x-icon"';
 			if (function_exists('finfo_open')) {
 				if (($finfo = @finfo_open(FILEINFO_MIME))) {
-					$iconMimeType = ' type="' . finfo_file($finfo, $favIcon) . '"';
+					$iconMimeType = ' type="' . finfo_file($finfo, $favIconPath) . '"';
 					finfo_close($finfo);
-					$pageRenderer->setIconMimeType($iconMimeType);
 				}
 			}
+			$pageRenderer->setIconMimeType($iconMimeType);
 			$pageRenderer->setFavIcon($favIcon);
 
 		}