diff --git a/include/mapnik/value.hpp b/include/mapnik/value.hpp
index 78299e497..4b7a08ece 100644
--- a/include/mapnik/value.hpp
+++ b/include/mapnik/value.hpp
@@ -759,7 +759,10 @@ public:
 
     value (value const& other) = default;
 
-    value( value && other) noexcept = default;
+    value( value && other)
+        noexcept (std::is_nothrow_move_constructible<value_base>::value)
+        : value_base(std::move(other))
+    {}
 
     template <typename T>
     value ( T const& val)
@@ -767,8 +770,15 @@ public:
 
     template <typename T>
     value ( T && val)
-        : value_base(typename detail::mapnik_value_type<T>::type(val)) {}
+        noexcept(std::is_nothrow_move_constructible<typename std::remove_const<T>::type>::value)
+        : value_base(std::move(typename detail::mapnik_value_type<T>::type(val))) {}
 
+    value & operator=( value && other)
+        noexcept(std::is_nothrow_move_assignable<typename std::remove_const<value_base>::type>::value)
+    {
+        value_base::operator=(std::move(other));
+        return *this;
+    }
     value & operator=( value const& other) = default;
 
     bool operator==(value const& other) const