diff --git a/merchant_ops/services/wallet.py b/merchant_ops/services/wallet.py
index 8835551..d8f139d 100644
--- a/merchant_ops/services/wallet.py
+++ b/merchant_ops/services/wallet.py
@@ -5,7 +5,7 @@ from django.db import transaction
 from django.db.models import F
 
 from merchant_ops.constants import (
-    WALLET_ALLOCATE, WALLET_DISPATCH_CONFIRM, WALLET_REFUND_RELEASE,
+    WALLET_ALLOCATE, WALLET_DISPATCH_CONFIRM, WALLET_REFUND_RELEASE, WALLET_REVOKE,
 )
 from merchant_ops.models import MerchantStaffWallet, MerchantStaffWalletLedger
 from users.models import UserShangjia