diff --git a/data/migration/v8-v9/migration.sql b/data/migration/v8-v9/migration.sql
index 63d148c0..88466e4c 100644
--- a/data/migration/v8-v9/migration.sql
+++ b/data/migration/v8-v9/migration.sql
@@ -7,7 +7,7 @@ CREATE TABLE IF NOT EXISTS topgg(
   userid BIGINT NOT NULL,
   boostedTimestamp TIMESTAMPTZ NOT NULL
 );
-CREATE INDEX topgg_member ON topgg (guildid, userid);
+CREATE INDEX topgg_member ON topgg (userid);
 -- }}}
 
 DROP FUNCTION close_study_session(_guildid BIGINT, _userid BIGINT);
diff --git a/data/schema.sql b/data/schema.sql
index c73d8749..5000b59f 100644
--- a/data/schema.sql
+++ b/data/schema.sql
@@ -792,7 +792,7 @@ create TABLE topgg(
   userid BIGINT NOT NULL,
   boostedTimestamp TIMESTAMPTZ NOT NULL
 );
-CREATE INDEX topgg_member ON topgg (guildid, userid);
+CREATE INDEX topgg_member ON topgg (userid);
 -- }}}
 
 -- vim: set fdm=marker: