1 files changed, 6 insertions, 10 deletions
diff --git a/engine/lib/upgrade.php b/engine/lib/upgrade.php
index d684af862..0cc1e64dc 100644
--- a/engine/lib/upgrade.php
+++ b/engine/lib/upgrade.php
@@ -354,16 +354,12 @@ function _elgg_upgrade_unlock() {
  * @access private
  */
 function _elgg_upgrade_is_locked() {
-	global $CONFIG, $DB_QUERY_CACHE;
-	
+	global $CONFIG;
+
 	$is_locked = count(get_data("show tables like '{$CONFIG->dbprefix}upgrade_lock'"));
-	
-	// Invalidate query cache
-	if ($DB_QUERY_CACHE) {
-		/* @var ElggStaticVariableCache $DB_QUERY_CACHE */
-		$DB_QUERY_CACHE->clear();
-		elgg_log("Query cache invalidated", 'NOTICE');
-	}
-	
+
+	// @todo why?
+	_elgg_invalidate_query_cache();
+
 	return $is_locked;
 }