diff --git a/v2_0_cpp_adaptor.md b/v2_0_cpp_adaptor.md
index c95fe3a..9785865 100644
--- a/v2_0_cpp_adaptor.md
+++ b/v2_0_cpp_adaptor.md
@@ -150,7 +150,7 @@ struct your_class : base1, base2 {
 | MSGPACK_BASE_ARRAY   | array                       |
 | MSGPACK_BASE_MAP     | map                         |
 
-*4 When you define MSGPACK_USE_DEFINE_MAP, MSGPACK_BASE is adapted to array, otherwise adapted to map.
+*4 When you define MSGPACK_USE_DEFINE_MAP, MSGPACK_BASE is map to array, otherwise adapted to adapted.
 
 You must use MSGPACK_BASE with MSGPACK_DEFINE, MSGPACK_BASE_ARRAY with MSGPACK_DEFINE_ARRAY, or MSGPACK_BASE_MAP with MSGPACK_DEFINE_MAP. When you use MSGPACK_BASE_MAP, the key is the STR of the base class name.