diff --git a/libs/util/include/psemek/util/enum.hpp b/libs/util/include/psemek/util/enum.hpp
index 7bf272b2..c2e20bad 100644
--- a/libs/util/include/psemek/util/enum.hpp
+++ b/libs/util/include/psemek/util/enum.hpp
@@ -90,6 +90,8 @@ namespace psemek::util
 		}; \
 		auto it = map.find(str); if (it == map.end()) return std::nullopt; return it->second; \
 	} \
+	template <typename Char, typename Traits> \
+	inline ::std::basic_ostream<Char, Traits> & operator << (::std::basic_ostream<Char, Traits> & os, name value) { return os << to_string(value); } \
 	inline ::psemek::util::enum_range<name> BOOST_PP_CAT(name, _values) () { return {0, BOOST_PP_SEQ_SIZE(values)}; }