diff --git a/include/fractal.hpp b/include/fractal.hpp
index 3de50bd..ae1c97c 100644
--- a/include/fractal.hpp
+++ b/include/fractal.hpp
@@ -20,6 +20,8 @@ constexpr size_t g_max_rules_marking = 4;
 using token_id_t = uint32_t;
 using group_id_t = uint32_t;
 using weighted_group_id_t = uint32_t;
+using branch_rule_basic_id_t = uint32_t;
+using branch_rule_marking_id_t = uint32_t;
 
 enum class token_type_e {
 	none,