diff --git a/include/chaiscript/dispatchkit/function_call.hpp b/include/chaiscript/dispatchkit/function_call.hpp
index 5692e34..c5b950a 100644
--- a/include/chaiscript/dispatchkit/function_call.hpp
+++ b/include/chaiscript/dispatchkit/function_call.hpp
@@ -40,7 +40,7 @@ namespace chaiscript
       {
         const bool has_arity_match = std::any_of(funcs.begin(), funcs.end(),
             [](const Const_Proxy_Function &f) {
-              return f->get_arity() == -1 || f->get_arity() == chaiscript::dispatch::detail::Arity<FunctionType>::arity;
+              return f->get_arity() == -1 || size_t(f->get_arity()) == chaiscript::dispatch::detail::Arity<FunctionType>::arity;
             });
 
         if (!has_arity_match) {
diff --git a/include/chaiscript/utility/json.hpp b/include/chaiscript/utility/json.hpp
index ef3fd34..82a1dac 100644
--- a/include/chaiscript/utility/json.hpp
+++ b/include/chaiscript/utility/json.hpp
@@ -107,13 +107,13 @@ class JSON
         JSON() : Internal(), Type( Class::Null ){}
 
         explicit JSON(Class type)
-            : JSON()
+            : Internal(), Type(Class::Null)
         {
             SetType( type );
         }
 
         JSON( initializer_list<JSON> list ) 
-            : JSON() 
+            : Internal(), Type(Class::Null)
         {
             SetType( Class::Object );
             for( auto i = list.begin(), e = list.end(); i != e; ++i, ++i )
@@ -418,7 +418,7 @@ class JSON
 
     private:
 
-        Class Type = Class::Null;
+        Class Type;
 };
 
 JSON Array() {
diff --git a/include/chaiscript/utility/json_wrap.hpp b/include/chaiscript/utility/json_wrap.hpp
index b7e3ca1..1b0631d 100644
--- a/include/chaiscript/utility/json_wrap.hpp
+++ b/include/chaiscript/utility/json_wrap.hpp
@@ -32,7 +32,7 @@ namespace chaiscript
 
               for (const auto &p : t_json.ObjectRange())
               {
-                m.emplace(p.first, from_json(p.second));
+                m.insert(std::make_pair(p.first, from_json(p.second)));
               }
 
               return Boxed_Value(m);