diff --git a/include/mapnik/util/geometry_to_wkt.hpp b/include/mapnik/util/geometry_to_wkt.hpp
index 2c1c1829d..9b92a8868 100644
--- a/include/mapnik/util/geometry_to_wkt.hpp
+++ b/include/mapnik/util/geometry_to_wkt.hpp
@@ -32,6 +32,8 @@ namespace mapnik { namespace util {
 
 bool to_wkt(std::string & wkt,  mapnik::geometry::geometry<double> const& geom);
 
+bool to_wkt(std::string & wkt,  mapnik::geometry::geometry<std::int64_t> const& geom);
+
 }}
 
 
diff --git a/src/wkt/geometry_to_wkt.cpp b/src/wkt/geometry_to_wkt.cpp
index 64d652434..3460dfec4 100644
--- a/src/wkt/geometry_to_wkt.cpp
+++ b/src/wkt/geometry_to_wkt.cpp
@@ -36,13 +36,12 @@ bool to_wkt(std::string & wkt,  mapnik::geometry::geometry<double> const& geom)
     return boost::spirit::karma::generate(sink, generator, geom);
 }
 
-/*
-inline bool to_wkt(std::string & wkt,  mapnik::geometry::geometry<std::int64_t> const& geom)
+bool to_wkt(std::string & wkt,  mapnik::geometry::geometry<std::int64_t> const& geom)
 {
     using sink_type = std::back_insert_iterator<std::string>;
     static const mapnik::wkt::wkt_generator_grammar<sink_type, mapnik::geometry::geometry<std::int64_t>> generator;
     sink_type sink(wkt);
     return boost::spirit::karma::generate(sink, generator, geom);
 }
-*/
+
 }}
diff --git a/test/unit/serialization/wkb_test.cpp b/test/unit/serialization/wkb_test.cpp
index 7e25bf2a2..97c292486 100644
--- a/test/unit/serialization/wkb_test.cpp
+++ b/test/unit/serialization/wkb_test.cpp
@@ -100,7 +100,7 @@ TEST_CASE("Well-known-geometries")
             REQUIRE(mapnik::util::parse_hex(columns[2], twkb));
             mapnik::geometry::geometry<double> geom_0 = mapnik::geometry_utils::from_wkb(wkb.data(), wkb.size(), mapnik::wkbAuto);
             mapnik::geometry::geometry<double> geom_1 = mapnik::geometry_utils::from_twkb(twkb.data(), twkb.size());
-            // compare WKTs
+            // compare WKTs as doubles
             std::string wkt0, wkt1;
             REQUIRE(mapnik::util::to_wkt(wkt0, geom_0));
             REQUIRE(mapnik::util::to_wkt(wkt1, geom_1));
@@ -112,6 +112,25 @@ TEST_CASE("Well-known-geometries")
                 REQUIRE(spatially_equal(geom_0, geom_1));
 #endif
             }
+
+            // compare WKTS as ints
+            // note: mapnik::util::to_wkt<std::int64_t> used in mapnik-vt
+            std::string wkt2, wkt3;
+            mapnik::geometry::line_string<std::int64_t> geom_2;
+            geom_2.emplace_back(0,0);
+            geom_2.emplace_back(1,1);
+            geom_2.emplace_back(2,2);
+            mapnik::geometry::line_string<std::int64_t> geom_3;
+            geom_3.emplace_back(0,0);
+            geom_3.emplace_back(1,1);
+            geom_3.emplace_back(2,2);
+            REQUIRE(mapnik::util::to_wkt(wkt0, geom_2));
+            REQUIRE(mapnik::util::to_wkt(wkt1, geom_3));
+            if (!mapnik::geometry::is_empty(geom_2) && !mapnik::geometry::is_empty(geom_3))
+            {
+                REQUIRE(wkt2 == wkt3);
+                // compare spatially (NOTE: GeometryCollection comparison also enforces strict order)
+            }
         }
     }
 }