diff --git a/runtime/onert/core/include/backend/train/ExtraTensorRequest.h b/runtime/onert/core/include/backend/train/ExtraTensorRequest.h
index 73aa0efe857..a2b4f60f110 100644
--- a/runtime/onert/core/include/backend/train/ExtraTensorRequest.h
+++ b/runtime/onert/core/include/backend/train/ExtraTensorRequest.h
@@ -65,28 +65,18 @@ class ExtraTensorRequest
   ExtraTensorLifeTime lifetime;
   backend::train::ExtraTensor **address;
 
-  /*
   // w/o this copy constructor, it fails in android build
   // with this err msg :
   // note: in implicit copy assignment operator for 'onert::ir::OperandInfo' first required here
   ExtraTensorRequest operator=(const ExtraTensorRequest &o)
   {
-    ExtraTensorRequest r = {
-      .info = o.info,
-      .layout = o.layout,
-      .lifetime = o.lifetime,
-      .address = o.address,
-    };
-    return r;
+    return ExtraTensorRequest(o.info, o.lifetime, o.address);
   }
 
-  ExtraTensorRequest(const ExtraTensorRequest& o)
-  {
-    info = o.info;
-    layout = o.layout;
-    lifetime = o.lifetime;
-    address = o.address;
-  }*/
+public:
+  ir::OperandInfo info;
+  ExtraTensorLifeTime lifetime;
+  backend::train::ExtraTensor **address;
 };
 
 using ExtraTensorRequests = std::vector<ExtraTensorRequest>;