diff --git a/Release/include/cpprest/json.h b/Release/include/cpprest/json.h
index 9549f9b8..bf8e1c03 100644
--- a/Release/include/cpprest/json.h
+++ b/Release/include/cpprest/json.h
@@ -737,12 +737,13 @@ private:
     _ASYNCRTIMP void format(std::basic_string<char>& string) const;
 
 #ifdef ENABLE_JSON_VALUE_VISUALIZER
-    explicit value(std::unique_ptr<details::_Value> v, value_type kind) : m_value(std::move(v)), m_kind(kind)
+    _ASYNCRTIMP explicit value(std::unique_ptr<details::_Value> v, value_type kind);
 #else
-    explicit value(std::unique_ptr<details::_Value> v) : m_value(std::move(v))
+    _ASYNCRTIMP explicit value(std::unique_ptr<details::_Value> v);
 #endif
-    {
-    }
+public:
+    _ASYNCRTIMP ~value() CPPREST_NOEXCEPT;
+private:
 
     std::unique_ptr<details::_Value> m_value;
 #ifdef ENABLE_JSON_VALUE_VISUALIZER
diff --git a/Release/src/json/json.cpp b/Release/src/json/json.cpp
index 079ccae4..aa4598e9 100644
--- a/Release/src/json/json.cpp
+++ b/Release/src/json/json.cpp
@@ -495,3 +495,15 @@ const web::json::details::json_error_category_impl& web::json::details::json_err
 #endif
     return instance;
 }
+
+#ifdef ENABLE_JSON_VALUE_VISUALIZER
+web::json::value::value(std::unique_ptr<details::_Value> v, value_type kind) : m_value(std::move(v)), m_kind(kind)
+#else
+web::json::value::value(std::unique_ptr<details::_Value> v) : m_value(std::move(v))
+#endif
+{
+}
+
+web::json::value::~value() CPPREST_NOEXCEPT
+{
+}