diff --git a/api/api.proto b/api/api.proto
index 50e7f0950..ff58e4a47 100644
--- a/api/api.proto
+++ b/api/api.proto
@@ -761,6 +761,10 @@ service WalletSolidity {
       }
     };
   }
+
+  rpc TriggerConstantContract (TriggerSmartContract) returns (TransactionExtention) {
+  }
+
 };
 
 service WalletExtension {