diff --git a/proto/c2se/member_bank_withdraw.proto b/proto/c2se/member_bank_withdraw.proto
index f41e8c2..1f66bb1 100644
--- a/proto/c2se/member_bank_withdraw.proto
+++ b/proto/c2se/member_bank_withdraw.proto
@@ -64,7 +64,7 @@ message UpdateMemberBankWithdrawRequest {
   string bank_name = 2;
   string name = 3;
   string account_number = 4;
-  uint32 double = 5;
+  double amount = 5;
   string password = 6;
   optional string memo = 7;
 }