diff --git a/api/api.proto b/api/api.proto
index 5d5e810f75e..d01979ee993 100644
--- a/api/api.proto
+++ b/api/api.proto
@@ -25,6 +25,10 @@ service Wallet {
 
   };
 
+  rpc UpdateAccount (AccountUpdateContract) returns (Transaction) {
+
+  };
+
   rpc CreateAccount (AccountCreateContract) returns (Transaction) {
 
   };
diff --git a/core/Contract.proto b/core/Contract.proto
index 17b262506df..9d0870973c6 100644
--- a/core/Contract.proto
+++ b/core/Contract.proto
@@ -28,6 +28,12 @@ message AccountCreateContract {
   bytes owner_address = 3;
 }
 
+// update account name if the account has no name.
+message AccountUpdateContract{
+  bytes account_name = 1;
+  bytes owner_address = 2;
+}
+
 message TransferContract {
   bytes owner_address = 1;
   bytes to_address = 2;