diff --git t3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php t3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php
index 187aa64..141fa95 100644
--- t3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php
+++ t3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php
@@ -372,7 +372,7 @@ class t3lib_cache_backend_DbBackend extends t3lib_cache_backend_AbstractBackend
 				$this->tagsTable
 			);
 		}
-		$GLOBALS['TYPO3_DB']->sql_free_result($cacheEntryIdentifierRowsRessource);
+		$GLOBALS['TYPO3_DB']->sql_free_result($tagsEntryIdentifierRowsRessource);
 
 			// Delete tag rows connected to expired cache entries
 		if (count($tagsEntryIdentifiers)) {