diff --git a/src/libraries/turtle/log.hpp b/src/libraries/turtle/log.hpp
index 077b562..91d29a7 100644
--- a/src/libraries/turtle/log.hpp
+++ b/src/libraries/turtle/log.hpp
@@ -232,14 +232,14 @@ namespace detail2
         return s << ')';
     }
 
-    template< typename T >
-    BOOST_DEDUCED_TYPENAME boost::enable_if<
-            boost::function_types::is_callable_builtin< T >, stream&
-    >::type
-    operator<<( stream& s, const T* )
-    {
-         return s << '?';
-    }
+    //template< typename T >
+    //BOOST_DEDUCED_TYPENAME boost::enable_if<
+    //        boost::function_types::is_callable_builtin< T >, stream&
+    //>::type
+    //operator<<( stream& s, const T& )
+    //{
+    //     return s << '?';
+    //}
 }
 
 #endif // #ifndef MOCK_LOG_HPP_INCLUDED
diff --git a/src/tests/turtle_test/log_with_conversions_test.cpp b/src/tests/turtle_test/log_with_conversions_test.cpp
index 83707e3..9471608 100644
--- a/src/tests/turtle_test/log_with_conversions_test.cpp
+++ b/src/tests/turtle_test/log_with_conversions_test.cpp
@@ -429,17 +429,17 @@ BOOST_AUTO_TEST_CASE( false_positive_container_serialization_can_still_be_overri
     BOOST_CHECK_EQUAL( "false_positive_container", to_string( false_positive_container() ) );
 }
 
-namespace
-{
-    void callable_builtin()
-    {}
-}
-
-BOOST_AUTO_TEST_CASE( callable_builtin_yields_an_interrogation_mark_when_serialized_with_conversions )
-{
-    BOOST_CHECK_EQUAL( "?", to_string( callable_builtin ) );
-    BOOST_CHECK_EQUAL( "?", to_string( &callable_builtin ) );
-}
+//namespace
+//{
+//    void callable_builtin()
+//    {}
+//}
+//
+//BOOST_AUTO_TEST_CASE( callable_builtin_yields_an_interrogation_mark_when_serialized_with_conversions )
+//{
+//    BOOST_CHECK_EQUAL( "?", to_string( callable_builtin ) );
+//    BOOST_CHECK_EQUAL( "?", to_string( &callable_builtin ) );
+//}
 
 namespace
 {
diff --git a/src/tests/turtle_test/log_without_conversions_test.cpp b/src/tests/turtle_test/log_without_conversions_test.cpp
index 42e664d..f25ebab 100644
--- a/src/tests/turtle_test/log_without_conversions_test.cpp
+++ b/src/tests/turtle_test/log_without_conversions_test.cpp
@@ -425,17 +425,17 @@ BOOST_AUTO_TEST_CASE( false_positive_container_serialization_can_still_be_overri
     BOOST_CHECK_EQUAL( "false_positive_container", to_string( false_positive_container() ) );
 }
 
-namespace
-{
-    void callable_builtin()
-    {}
-}
-
-BOOST_AUTO_TEST_CASE( callable_builtin_yields_an_interrogation_mark_when_serialized_without_conversions )
-{
-    BOOST_CHECK_EQUAL( "?", to_string( callable_builtin ) );
-    BOOST_CHECK_EQUAL( "?", to_string( &callable_builtin ) );
-}
+//namespace
+//{
+//    void callable_builtin()
+//    {}
+//}
+//
+//BOOST_AUTO_TEST_CASE( callable_builtin_yields_an_interrogation_mark_when_serialized_without_conversions )
+//{
+//    BOOST_CHECK_EQUAL( "?", to_string( callable_builtin ) );
+//    BOOST_CHECK_EQUAL( "?", to_string( &callable_builtin ) );
+//}
 
 namespace
 {