diff --git a/src/libraries/turtle/log.hpp b/src/libraries/turtle/log.hpp
index 57d80b6..14b3cf4 100644
--- a/src/libraries/turtle/log.hpp
+++ b/src/libraries/turtle/log.hpp
@@ -140,6 +140,10 @@ namespace detail2
     {
         s << '"' << str << '"';
     }
+    inline void serialize( stream& s, unsigned char c )
+    {
+        s << static_cast< int >( c );
+    }
 
     template< typename T >
     struct formatter
diff --git a/src/tests/turtle_test/log_test.cpp b/src/tests/turtle_test/log_test.cpp
index c829e42..6de2613 100644
--- a/src/tests/turtle_test/log_test.cpp
+++ b/src/tests/turtle_test/log_test.cpp
@@ -558,3 +558,8 @@ BOOST_AUTO_TEST_CASE( mock_detail_template_template_streamable_yields_its_value_
 {
     BOOST_CHECK_EQUAL( "mock::detail::template_streamable", to_string( mock::detail::template_streamable< int >() ) );
 }
+
+BOOST_AUTO_TEST_CASE( unsigned_char_is_serialized_as_int )
+{
+    BOOST_CHECK_EQUAL( boost::lexical_cast< std::string >( int( 'a' ) ), to_string( unsigned char( 'a' ) ) );
+}