Index: typo3/sysext/reports/mod/index.php
===================================================================
--- typo3/sysext/reports/mod/index.php	(revision 6388)
+++ typo3/sysext/reports/mod/index.php	(working copy)
@@ -197,6 +197,17 @@
 			$reportClass = $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['reports'][$extKey][$reportName]['report'];
 			$title       = $GLOBALS['LANG']->sL($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['reports'][$extKey][$reportName]['title']);
 
+				// support common syntax EXT:extkey/path_to_file:classname
+			if (substr($reportClass, 0, 4) === 'EXT:') {
+				list($extKey, $local) = explode('/', substr($reportClass, 4), 2);
+				if (!empty($extKey) && !empty($local) && t3lib_extMgm::isLoaded($extKey)) {
+					$parts = explode(':', t3lib_extMgm::extPath($extKey) . $local);
+					$reportClass = array_pop($parts);
+					$filename = implode(':', $parts);
+					t3lib_div::requireOnce($filename);
+				}
+			}
+
 			$reportInstance = t3lib_div::makeInstance($reportClass, $this);
 
 			if ($reportInstance instanceof tx_reports_Report) {