diff --git a/lib/cpp/test/SpecializationTest.cpp b/lib/cpp/test/SpecializationTest.cpp
index 008837d..0976112 100644
--- a/lib/cpp/test/SpecializationTest.cpp
+++ b/lib/cpp/test/SpecializationTest.cpp
@@ -26,6 +26,7 @@
   ooe.some_characters = "JSON THIS! \"\1";
   ooe.zomg_unicode = "\xd7\n\a\t";
   ooe.base64 = "\1\2\3\255";
+  ooe.rfc4122_uuid = "00000000-0000-0000-0000-000000000000";
 
   Nesting n;
   n.my_ooe = ooe;
@@ -89,6 +90,8 @@
   OneOfEach ooe2;
   ooe2.read(proto.get());
 
+  BOOST_TEST_INFO("Write: " << ooe);
+  BOOST_TEST_INFO("Read : " << ooe2);
   BOOST_CHECK(ooe == ooe2);
 
   hm.write(proto.get());