diff --git a/includes/AbuseFilter.php b/includes/AbuseFilter.php
index ac8cfeb45..dd2199d6d 100644
--- a/includes/AbuseFilter.php
+++ b/includes/AbuseFilter.php
@@ -3397,7 +3397,7 @@ class AbuseFilter {
 
 		return MediaWikiServices::getInstance()
 			->getDBLoadBalancerFactory()
-			->getMainLB( $index )
+			->getMainLB( $wgAbuseFilterCentralDB )
 			->getConnectionRef( $index, [], $wgAbuseFilterCentralDB );
 	}
 }