diff --git a/v2_0_cpp_adaptor.md b/v2_0_cpp_adaptor.md
index 17705f4..d229495 100644
--- a/v2_0_cpp_adaptor.md
+++ b/v2_0_cpp_adaptor.md
@@ -223,7 +223,7 @@ class my_class {
 public:
     my_class() {} // When you want to convert from msgpack::object to my_class
                   // using msgpack::object::as fucntion template,
-                  // my_class should be default constractible.
+                  // my_class should be default constructible.
     my_class(std::string const& name, int age):name_(name), age_(age) {}
 
     // my_class should provide getters for the data members you want to pack.