diff --git a/libs/async/include/psemek/async/future.hpp b/libs/async/include/psemek/async/future.hpp
index ecefbcea..7a281526 100644
--- a/libs/async/include/psemek/async/future.hpp
+++ b/libs/async/include/psemek/async/future.hpp
@@ -158,7 +158,9 @@ namespace psemek::async
 
 		bool ready() const
 		{
-			return wait_for(std::chrono::seconds{0});
+			if (!state_) throw empty_future_error{};
+			std::unique_lock lock(state_->value_mutex);
+			return has_value_unsafe();
 		}
 
 		template <typename F>