diff --git a/libs/bt/include/psemek/bt/action.hpp b/libs/bt/include/psemek/bt/action.hpp
index 2420f20f..8c0a55a6 100644
--- a/libs/bt/include/psemek/bt/action.hpp
+++ b/libs/bt/include/psemek/bt/action.hpp
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <type_traits>
+
 #include <psemek/bt/node.hpp>
 #include <psemek/bt/assert.hpp>
 
@@ -18,7 +20,7 @@ namespace psemek::bt
 		using typename node_type::finished;
 		using typename node_type::status;
 
-		static_assert(std::is_same_v<std::result_of_t<ActionFn(Time, Args...)>, void>, "bt::action result type must be void");
+		static_assert(std::is_same_v<std::invoke_result_t<ActionFn, Time, Args...>, void>, "bt::action result type must be void");
 
 		action_node(ActionFn && action_fn)
 			: action_fn_(std::move(action_fn))