diff --git a/pkg/store/builtin/migrate/migrate.go b/pkg/store/builtin/migrate/migrate.go
index f13c428d1..95dfe521d 100644
--- a/pkg/store/builtin/migrate/migrate.go
+++ b/pkg/store/builtin/migrate/migrate.go
@@ -142,7 +142,6 @@ CREATE TABLE IF NOT EXISTS commits (
 	,commit_created        INTEGER
 	,commit_updated        INTEGER
 	,UNIQUE(repo_id, commit_seq)
-	,UNIQUE(repo_id, commit_sha, commit_ref)
 );
 `