diff --git a/packages/db/src/index.ts b/packages/db/src/index.ts
index 145ef7b..f8eac75 100644
--- a/packages/db/src/index.ts
+++ b/packages/db/src/index.ts
@@ -92,10 +92,9 @@ export function migrateSchema(sqlite: Sqlite): void {
     CREATE INDEX IF NOT EXISTS idx_audit_log_action ON audit_log(action);
     CREATE INDEX IF NOT EXISTS idx_audit_log_actor ON audit_log(actor_user_id, created_at);
     CREATE INDEX IF NOT EXISTS idx_audit_log_target ON audit_log(target_id, created_at);
-    CREATE INDEX IF NOT EXISTS idx_audit_log_source ON audit_log(source_app, created_at);
-    CREATE UNIQUE INDEX IF NOT EXISTS idx_audit_log_event_id ON audit_log(event_id) WHERE event_id IS NOT NULL;
   `)
 
+  // Existing DBs: CREATE TABLE IF NOT EXISTS skips schema — ALTER before indexes on new cols.
   const settingsCols = sqlite
     .prepare(`PRAGMA table_info(portal_settings)`)
     .all() as Array<{ name: string }>
@@ -124,8 +123,6 @@ export function migrateSchema(sqlite: Sqlite): void {
     )
   }
   sqlite.exec(`
-    CREATE INDEX IF NOT EXISTS idx_audit_log_actor ON audit_log(actor_user_id, created_at);
-    CREATE INDEX IF NOT EXISTS idx_audit_log_target ON audit_log(target_id, created_at);
     CREATE INDEX IF NOT EXISTS idx_audit_log_source ON audit_log(source_app, created_at);
     CREATE UNIQUE INDEX IF NOT EXISTS idx_audit_log_event_id ON audit_log(event_id) WHERE event_id IS NOT NULL;
   `)