diff --git a/onnxruntime/core/graph/model.cc b/onnxruntime/core/graph/model.cc
index f03e311168..ca31a76525 100644
--- a/onnxruntime/core/graph/model.cc
+++ b/onnxruntime/core/graph/model.cc
@@ -237,7 +237,7 @@ Status Model::Load(std::istream& model_istream, ModelProto* p_model_proto) {
   if (!p_model_proto) {
     return Status(ONNXRUNTIME, INVALID_ARGUMENT, "Null model_proto ptr.");
   }
-  google::protobuf::io::IstreamInputStream zero_copy_input(&model_istream);
+  google::protobuf::io::IstreamInputStream zero_copy_input(&model_istream, 1 << 20);
   const bool result = p_model_proto->ParseFromZeroCopyStream(&zero_copy_input) && model_istream.eof();
   if (!result) {
     return Status(ONNXRUNTIME, INVALID_PROTOBUF, "Failed to load model because protobuf parsing failed.");
@@ -447,7 +447,8 @@ Status Model::Load(int fd, ONNX_NAMESPACE::ModelProto& model_proto) {
   }
 
 #if GOOGLE_PROTOBUF_VERSION >= 3002000
-  const bool result = model_proto.ParseFromFileDescriptor(fd);
+  FileInputStream input(fd, 1 << 20);
+  const bool result = model_proto.ParseFromZeroCopyStream(&input) && input.GetErrno() == 0;
   if (!result) {
     return Status(ONNXRUNTIME, INVALID_PROTOBUF, "Protobuf parsing failed.");
   }
diff --git a/onnxruntime/test/onnx/TestCase.cc b/onnxruntime/test/onnx/TestCase.cc
index 933482dd2f..7d6ed4a00a 100644
--- a/onnxruntime/test/onnx/TestCase.cc
+++ b/onnxruntime/test/onnx/TestCase.cc
@@ -176,7 +176,9 @@ class OnnxModelInfo : public TestModelInfo {
     }
 
     ONNX_NAMESPACE::ModelProto model_pb;
-    if (!model_pb.ParseFromFileDescriptor(model_fd)) {
+    ::google::protobuf::io::FileInputStream input(model_fd, 1 << 20);
+    const bool parse_result = model_pb.ParseFromZeroCopyStream(&input) && input.GetErrno() == 0;
+    if (!parse_result) {
       (void)Env::Default().FileClose(model_fd);
       ORT_THROW("Failed to load model because protobuf parsing failed.");
     }