diff --git a/v2_0_cpp_adaptor.md b/v2_0_cpp_adaptor.md
index f676a08..ea2dae9 100644
--- a/v2_0_cpp_adaptor.md
+++ b/v2_0_cpp_adaptor.md
@@ -319,7 +319,7 @@ struct object_with_zone<my_class> {
 } // namespace msgpack
 ```
 
-https://github.com/msgpack/msgpack-c/blob/master/example/cpp03/class_non_intrusive.cpp
+https://github.com/msgpack/msgpack-c/blob/cpp_master/example/cpp03/class_non_intrusive.cpp
 
 When you use `msgpack::object::as` member function template in `convert` class template specilization, , temporary objects are created.
 
@@ -460,4 +460,4 @@ You need to use MSGPACK_ADD_ENUM in the global namespace.
 
 The macro MSGPACK_DEFINE provides [packing](v2_0_cpp_packer#packing-enums), converting to msgpack object with or without zone, and converting to your_enum from msgpack::object functionalities. your_enum is packed/converted as msgpack positive/negative integer.
 
-See an [example](https://github.com/msgpack/msgpack-c/blob/master/example/cpp03/enum.cpp).
\ No newline at end of file
+See an [example](https://github.com/msgpack/msgpack-c/blob/cpp_master/example/cpp03/enum.cpp).
\ No newline at end of file