diff --git a/paddle/fluid/framework/device_worker.h b/paddle/fluid/framework/device_worker.h
index 035392ef318cb7861a7db185df990ec9bf7bbfb9..8c91a5b9bf49b5ee069e7543725134a6fb74540b 100644
--- a/paddle/fluid/framework/device_worker.h
+++ b/paddle/fluid/framework/device_worker.h
@@ -119,9 +119,9 @@ class DeviceWorker {
   }
 
  protected:
-  Scope* root_scope_;
+  Scope* root_scope_ = nullptr;
   paddle::platform::Place place_;
-  DataFeed* device_reader_;
+  DataFeed* device_reader_ = nullptr;
   int64_t batch_num_;
   FetchConfig fetch_config_;
   bool use_cvm_;