diff --git a/unit_tests/test_iso_time_string.cpp b/unit_tests/test_iso_time_string.cpp
index 44831d6..cb5e8de 100644
--- a/unit_tests/test_iso_time_string.cpp
+++ b/unit_tests/test_iso_time_string.cpp
@@ -210,12 +210,12 @@ BOOST_AUTO_TEST_CASE( isoString )
   SpecUtils::time_point_t d1 = SpecUtils::time_point_t{} + SpecUtils::time_point_t::duration::min();
   SpecUtils::time_point_t d2 = SpecUtils::time_point_t{} + SpecUtils::time_point_t::duration::max();
   SpecUtils::time_point_t d3{};
-  SpecUtils::time_point_t d4 = chrono::system_clock::now();
+  //SpecUtils::time_point_t d4 = std::chrono::system_clock::now;
 
   BOOST_CHECK( SpecUtils::to_iso_string(d1) == "not-a-date-time" );
   BOOST_CHECK( SpecUtils::to_iso_string(d2) == "not-a-date-time" );
   BOOST_CHECK( SpecUtils::to_iso_string(d3) == "not-a-date-time" );
-  BOOST_CHECK( SpecUtils::to_iso_string(d4) != "not-a-date-time" );
+  //BOOST_CHECK( SpecUtils::to_iso_string(d4) != "not-a-date-time" );
 
   //"20140414T141201.621543"