diff --git a/include/chaiscript/dispatchkit/bootstrap_stl.hpp b/include/chaiscript/dispatchkit/bootstrap_stl.hpp
index b7dd04c..66297ee 100644
--- a/include/chaiscript/dispatchkit/bootstrap_stl.hpp
+++ b/include/chaiscript/dispatchkit/bootstrap_stl.hpp
@@ -631,9 +631,6 @@ namespace chaiscript
           typedef typename String::size_type (String::*find_func_ptr)(const String &, typename String::size_type) const;
           typedef boost::function<int (const String *, const String &, int)> find_func;
 
-          typedef String (String::*substr_ptr)(typename String::size_type, typename String::size_type) const;
-          typedef boost::function<String (const String *, int, int)> substr_func;
-
           m->add(fun(find_func(detail::return_int(static_cast<find_func_ptr>(&String::find)))), "find");
           m->add(fun(find_func(detail::return_int(static_cast<find_func_ptr>(&String::rfind)))), "rfind");
           m->add(fun(find_func(detail::return_int(static_cast<find_func_ptr>(&String::find_first_of)))), "find_first_of");
@@ -641,8 +638,7 @@ namespace chaiscript
           m->add(fun(find_func(detail::return_int(static_cast<find_func_ptr>(&String::find_first_not_of)))), "find_first_not_of");
           m->add(fun(find_func(detail::return_int(static_cast<find_func_ptr>(&String::find_last_not_of)))), "find_last_not_of");
 
-
-          m->add(fun(&detail::substr_helper<String, static_cast<substr_ptr>(&String::substr)>), "substr");
+          m->add(fun(&detail::substr_helper<String, &String::substr>), "substr");
 
           m->add(fun(&String::c_str), "c_str");
           m->add(fun(&String::data), "data");