diff --git a/paddle/framework/net.h b/paddle/framework/net.h
index d3e3e80d5bb0df035490c3f89c79c73999e28681..3264f1f565e3efc188e7835cb9b44e5741e1eea8 100644
--- a/paddle/framework/net.h
+++ b/paddle/framework/net.h
@@ -71,7 +71,7 @@ class PlainNet : public Net {
    * will be used.
    */
   void Run(const std::shared_ptr<Scope>& scope,
-           platform::DeviceContext& dev_ctx) const override {
+           const platform::DeviceContext& dev_ctx) const override {
     for (auto& op : ops_) {
       op->Run(scope, dev_ctx);
     }