diff --git a/odpf/optimus/runtime_service.proto b/odpf/optimus/runtime_service.proto
index 38954c26..f48ae94f 100644
--- a/odpf/optimus/runtime_service.proto
+++ b/odpf/optimus/runtime_service.proto
@@ -122,7 +122,7 @@ service RuntimeService {
     // RegisterInstance is an internal admin command used during task execution
     rpc RegisterInstance(RegisterInstanceRequest) returns (RegisterInstanceResponse) {
         option (google.api.http) = {
-            post: "/api/v1/instance"
+            post: "/api/v1/project/{project_name}/job/{job_name}/instance"
             body: "*"
         };
     }
@@ -167,7 +167,7 @@ service RuntimeService {
             body: "*"
         };
     }
-    // TODO(kush.sharma): unsupported ATM
+    // TODO(kush.sharma): disabled ATM
     //rpc DeleteResource(DeleteResourceRequest) returns (DeleteResourceResponse) {}
 
 }