diff --git a/src/matrix/storage/idb/Transaction.js b/src/matrix/storage/idb/Transaction.js
index bfd50a5e..08eacb34 100644
--- a/src/matrix/storage/idb/Transaction.js
+++ b/src/matrix/storage/idb/Transaction.js
@@ -116,7 +116,7 @@ export class Transaction {
         return this._store("accountData", idbStore => new AccountDataStore(idbStore));
     }
 
-    async complete() {
+    complete() {
         return txnAsPromise(this._txn);
     }