diff --git a/maintenance/updatePerUserBlacklist.php b/maintenance/updatePerUserBlacklist.php
index 83d29b5eb..94e2aaa1c 100644
--- a/maintenance/updatePerUserBlacklist.php
+++ b/maintenance/updatePerUserBlacklist.php
@@ -79,7 +79,7 @@ class EchoUpdatePerUserBlacklist extends LoggedUpdateMaintenance {
 					]
 				);
 				$processed += $dbw->affectedRows();
-				$dbFactory->waitForSlaves();
+				wfWaitForSlaves();
 			}
 
 			$this->output( "Updated $processed Users\n" );