diff --git a/examples/vision/segmentation/paddleseg/cpp/infer.cc b/examples/vision/segmentation/paddleseg/cpp/infer.cc
index 41a90201a..10b295c20 100644
--- a/examples/vision/segmentation/paddleseg/cpp/infer.cc
+++ b/examples/vision/segmentation/paddleseg/cpp/infer.cc
@@ -85,8 +85,6 @@ void TrtInfer(const std::string& model_dir, const std::string& image_file) {
   auto option = fastdeploy::RuntimeOption();
   option.UseGpu();
   option.UseTrtBackend();
-  option.SetTrtInputShape("x", {1, 3, 256, 256}, {1, 3, 1024, 1024},
-                          {1, 3, 2048, 2048});
   auto model = fastdeploy::vision::segmentation::PaddleSegModel(
       model_file, params_file, config_file, option);