Index: t3lib/class.t3lib_befunc.php
===================================================================
--- t3lib/class.t3lib_befunc.php	(revision 7622)
+++ t3lib/class.t3lib_befunc.php	(working copy)
@@ -3163,7 +3163,7 @@
 			foreach ($fTWHERE_parts as $kk => $vv) {
 				if ($kk) {
 					$fTWHERE_subpart = explode('###', $vv, 2);
-					$fTWHERE_parts[$kk] = $TSconfig['_THIS_ROW'][$fTWHERE_subpart[0]].$fTWHERE_subpart[1];
+					$fTWHERE_parts[$kk] = $GLOBALS['TYPO3_DB']->quoteStr($TSconfig['_THIS_ROW'][$fTWHERE_subpart[0]], $foreign_table) . $fTWHERE_subpart[1];
 				}
 			}
 			$fTWHERE = implode('', $fTWHERE_parts);