diff --git a/paddle/pybind/tensor_py.h b/paddle/pybind/tensor_py.h
index 64e981e4e8d889f721d44e7b7d034af9228dd7ed..4d5e73e2c266b301de4f19e09be7ab4009c936d3 100644
--- a/paddle/pybind/tensor_py.h
+++ b/paddle/pybind/tensor_py.h
@@ -64,7 +64,7 @@ struct CastToPyBufferImpl<true, I, ARGS...> {
             tensor.dims(), platform::CPUPlace()));
 
         platform::DeviceContextPool &pool =
-            platform::DeviceContextPool::Instance;
+            platform::DeviceContextPool::Instance();
         auto dev_ctx = static_cast<const platform::CUDADeviceContext *>(
             pool.Get(tensor.place()));