diff --git a/proto/sgx/app.proto b/proto/sgx/app.proto
index 8d80138..68a6240 100644
--- a/proto/sgx/app.proto
+++ b/proto/sgx/app.proto
@@ -62,8 +62,8 @@ message DelAppReq {
 
 message ListAppContractsReq {
   string admin_pubkey = 1;
-  // string uuid = 2;
-  // string node_pubkey = 3;
+  bool as_operator = 2;
+  string uuid = 3;
 }