diff --git a/libs/ecs/include/psemek/ecs/define_component.hpp b/libs/ecs/include/psemek/ecs/define_component.hpp
index fad1003a..f09f8a3c 100644
--- a/libs/ecs/include/psemek/ecs/define_component.hpp
+++ b/libs/ecs/include/psemek/ecs/define_component.hpp
@@ -96,3 +96,8 @@ namespace psemek::ecs::detail
 		psemek_ecs_define_component_fields_impl(BOOST_PP_VARIADIC_SEQ_TO_SEQ(fields)) \
 		psemek_ecs_declare_uuid(BOOST_PP_STRINGIZE(cname)) \
 	};
+
+#define psemek_ecs_define_component_ext(cname, fields) \
+	struct cname { \
+		psemek_ecs_define_component_fields_impl(BOOST_PP_VARIADIC_SEQ_TO_SEQ(fields)) \
+		psemek_ecs_declare_uuid(BOOST_PP_STRINGIZE(cname))