Index: uspace/lib/cpp/include/functional
===================================================================
--- uspace/lib/cpp/include/functional	(revision c866a83963c9d6c8d137e5814d6b98011c19030f)
+++ uspace/lib/cpp/include/functional	(revision de00da5a3ca2f1d462111955da782499cdba9ade)
@@ -28,4 +28,5 @@
 
 #include <impl/functional.hpp>
+#include <internal/functional/arithmetic_operations.hpp>
 #include <internal/functional/bind.hpp>
 #include <internal/functional/function.hpp>