diff --git a/libs/util/include/psemek/util/enum.hpp b/libs/util/include/psemek/util/enum.hpp
index e5442cc2..8ad31372 100644
--- a/libs/util/include/psemek/util/enum.hpp
+++ b/libs/util/include/psemek/util/enum.hpp
@@ -40,6 +40,11 @@ namespace psemek::util
 	struct enum_iterator
 	{
 		using underlying_type = std::underlying_type_t<Enum>;
+		using difference_type = underlying_type;
+		using value_type = Enum;
+		using pointer = Enum const *;
+		using reference = Enum;
+		using iterator_category = std::bidirectional_iterator_tag;
 
 		underlying_type value;