diff --git a/libs/util/include/psemek/util/enum.hpp b/libs/util/include/psemek/util/enum.hpp
index 9a1c0cea..e5442cc2 100644
--- a/libs/util/include/psemek/util/enum.hpp
+++ b/libs/util/include/psemek/util/enum.hpp
@@ -53,6 +53,14 @@ namespace psemek::util
 			return copy;
 		}
 
+		enum_iterator operator --() { --value; return *this; }
+		enum_iterator operator -- (int)
+		{
+			enum_iterator copy = *this;
+			--(*this);
+			return copy;
+		}
+
 		friend bool operator == (enum_iterator const & it1, enum_iterator const & it2) = default;
 		friend bool operator != (enum_iterator const & it1, enum_iterator const & it2) = default;
 	};