diff --git a/lite/demo/cxx/x86_mobilenetv1_light_demo/mobilenet_light_api.cc b/lite/demo/cxx/x86_mobilenetv1_light_demo/mobilenet_light_api.cc
index 17997a228f03d84ab23638df9b64ae30ef844861..763a3fe8871398dda37e5302d24b8cf1659cf6ce 100644
--- a/lite/demo/cxx/x86_mobilenetv1_light_demo/mobilenet_light_api.cc
+++ b/lite/demo/cxx/x86_mobilenetv1_light_demo/mobilenet_light_api.cc
@@ -24,10 +24,10 @@ int64_t ShapeProduction(const shape_t& shape) {
   return res;
 }
 
-void RunModel(std::string model_dir) {
+void RunModel(std::string model_name) {
   // 1. Create MobileConfig
   MobileConfig config;
-  config.set_model_dir(model_dir);
+  config.set_model_from_file(model_name);
   // 2. Create PaddlePredictor by CxxConfig
   std::shared_ptr<PaddlePredictor> predictor =
       CreatePaddlePredictor<MobileConfig>(config);