diff --git a/src/exchangedb/drop0001.sql b/src/exchangedb/drop0001.sql
index 7ffa7554c..4d06fd510 100644
--- a/src/exchangedb/drop0001.sql
+++ b/src/exchangedb/drop0001.sql
@@ -44,7 +44,7 @@ DROP TABLE IF EXISTS denomination_revocations CASCADE;
 DROP TABLE IF EXISTS denominations CASCADE;
 
 -- Unregister patch (0001.sql)
-SELECT _v.unregister_patch('exchange-0001', NULL, NULL);
+SELECT _v.unregister_patch('exchange-0001');
 
 -- And we're out of here...
 COMMIT;