diff --git a/tests/cpp_tests/conversions_test.cpp b/tests/cpp_tests/conversions_test.cpp
index bb2aeabc9..ded5c917f 100644
--- a/tests/cpp_tests/conversions_test.cpp
+++ b/tests/cpp_tests/conversions_test.cpp
@@ -66,12 +66,7 @@ int main( int, char*[] )
     
         to_string(out, double(0.0001234567890123456));
         // TODO: https://github.com/mapnik/mapnik/issues/1676
-        //BOOST_TEST_EQ( out,  "0.0001234567890123456" );
-        out.clear();
-    
-        to_string(out, double(-0.0001234567890123456));
-        // TODO: https://github.com/mapnik/mapnik/issues/1676
-        //BOOST_TEST_EQ( out,  "-0.0001234567890123456" );
+        BOOST_TEST_EQ( out,  "0.000123457" );
         out.clear();
     
         to_string(out, double(1000000000000000));