diff --git a/README.md b/README.md
index 1ab2ecfa..2b1fed10 100644
--- a/README.md
+++ b/README.md
@@ -220,7 +220,7 @@ Questions
 
     The second number specifies the *type*.  The type of the object determines what fields it has.  For a
     complete list of type ID's, see `enum object_type` and `enum impl_object_type` in
-    [types.hpp](https://github.com/cryptonomex/graphene/blob/master/libraries/chain/include/graphene/chain/types.hpp).
+    [types.hpp](https://github.com/cryptonomex/graphene/blob/master/libraries/chain/include/graphene/chain/protocol/types.hpp).
 
     The third number specifies the *instance*.  The instance of the object is different for each individual
     object.