diff --git a/proto/proto_reflect.go b/proto/proto_reflect.go
new file mode 100644
index 0000000..b282f3c
--- /dev/null
+++ b/proto/proto_reflect.go
@@ -0,0 +1,14 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// The protoreflect build tag disables use of fast-path methods.
+// +build protoreflect
+
+package proto
+
+import "github.com/golang/protobuf/v2/runtime/protoiface"
+
+func protoMethods(m Message) *protoiface.Methods {
+	return nil
+}