diff --git a/include/mapnik/geometry/boost_spirit_karma_adapter.hpp b/include/mapnik/geometry/boost_spirit_karma_adapter.hpp
index 2a76e979d..8182e6e57 100644
--- a/include/mapnik/geometry/boost_spirit_karma_adapter.hpp
+++ b/include/mapnik/geometry/boost_spirit_karma_adapter.hpp
@@ -38,6 +38,11 @@ struct not_is_variant<mapnik::geometry::geometry<double>, karma::domain>
     : mpl::false_
 {};
 
+template <>
+struct not_is_variant<mapnik::geometry::geometry<std::int64_t>, karma::domain>
+    : mpl::false_
+{};
+
 template <>
 struct variant_which< mapnik::geometry::geometry<double> >
 {
@@ -47,6 +52,15 @@ struct variant_which< mapnik::geometry::geometry<double> >
     }
 };
 
+template <>
+struct variant_which< mapnik::geometry::geometry<std::int64_t> >
+{
+    static int call(mapnik::geometry::geometry<std::int64_t> const& v)
+    {
+        return v.which();
+    }
+};
+
 namespace detail {
 
 template <typename T, typename Tuple>
@@ -89,6 +103,17 @@ struct compute_compatible_component_variant<mapnik::geometry::geometry<double>,
     }
 };
 
+template <typename Expected>
+struct compute_compatible_component_variant<mapnik::geometry::geometry<std::int64_t>, Expected>
+    :  detail::has_type<Expected, mapnik::geometry::geometry<std::int64_t>::types>
+{
+    using compatible_type = Expected;
+    static bool is_compatible(int index)
+    {
+        return (index == detail::index<compatible_type, mapnik::geometry::geometry<std::int64_t>::types>::value);
+    }
+};
+
 }}}
 
 
diff --git a/src/wkt/mapnik_wkt_generator_grammar.cpp b/src/wkt/mapnik_wkt_generator_grammar.cpp
index 72452036a..a7267b71f 100644
--- a/src/wkt/mapnik_wkt_generator_grammar.cpp
+++ b/src/wkt/mapnik_wkt_generator_grammar.cpp
@@ -27,6 +27,6 @@ namespace mapnik { namespace wkt {
 
 using sink_type = std::back_insert_iterator<std::string>;
 template struct wkt_generator_grammar<sink_type, mapnik::geometry::geometry<double>>;
-//template struct wkt_generator_grammar<sink_type, mapnik::geometry::geometry<std::int64_t>>;
+template struct wkt_generator_grammar<sink_type, mapnik::geometry::geometry<std::int64_t>>;
 
 }}