diff --git a/sql/mysql.sql b/sql/mysql.sql
index 3fddea510..e2586853b 100644
--- a/sql/mysql.sql
+++ b/sql/mysql.sql
@@ -102,7 +102,7 @@ CREATE TABLE archive (
 ) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
 
 CREATE FULLTEXT INDEX i_text ON archive(txt);
-CREATE INDEX i_username USING BTREE ON archive(username);
+CREATE INDEX i_username_timestamp USING BTREE ON archive(username,timestamp);
 CREATE INDEX i_timestamp USING BTREE ON archive(timestamp);
 CREATE INDEX i_peer USING BTREE ON archive(peer);
 CREATE INDEX i_bare_peer USING BTREE ON archive(bare_peer);