diff --git a/include/chaiscript/dispatchkit/boxed_cast_helper.hpp b/include/chaiscript/dispatchkit/boxed_cast_helper.hpp
index 8f478bf..0e8870d 100644
--- a/include/chaiscript/dispatchkit/boxed_cast_helper.hpp
+++ b/include/chaiscript/dispatchkit/boxed_cast_helper.hpp
@@ -166,11 +166,11 @@ namespace chaiscript
     template<>
       struct Cast_Helper_Inner<Boxed_Value>
       {
-        typedef const Boxed_Value & Result_Type;
+        typedef std::reference_wrapper<const Boxed_Value> Result_Type;
 
         static Result_Type cast(const Boxed_Value &ob, const Type_Conversions *)
         {
-          return ob;
+          return std::cref(ob);
         }
       };
 
@@ -178,11 +178,11 @@ namespace chaiscript
     template<>
       struct Cast_Helper_Inner<Boxed_Value &>
       {
-        typedef Boxed_Value& Result_Type;
+        typedef std::reference_wrapper<Boxed_Value> Result_Type;
 
         static Result_Type cast(const Boxed_Value &ob, const Type_Conversions *)
         {
-          return const_cast<Boxed_Value &>(ob);
+          return std::ref(const_cast<Boxed_Value &>(ob));
         }
       };
 
diff --git a/samples/test_num_exceptions.cpp b/samples/test_num_exceptions.cpp
index 371d7f1..ba97f7a 100644
--- a/samples/test_num_exceptions.cpp
+++ b/samples/test_num_exceptions.cpp
@@ -3,7 +3,7 @@
 #include <chaiscript/dispatchkit/bootstrap_stl.hpp>
 #include <chaiscript/dispatchkit/function_call.hpp>
 
-int main( int argc , char * argv[] )
+int main( int /*argc*/ , char * /*argv*/[] )
 {
   chaiscript::ChaiScript ch( chaiscript::Std_Lib::library( ) );