Index: uspace/lib/cpp/include/functional
===================================================================
--- uspace/lib/cpp/include/functional	(revision c866a83963c9d6c8d137e5814d6b98011c19030f)
+++ uspace/lib/cpp/include/functional	(revision 6a3a64f9ca5ecfac019f3def74bb32509be36d1b)
@@ -28,4 +28,5 @@
 
 #include <impl/functional.hpp>
+#include <internal/functional/arithmetic_operations.hpp>
 #include <internal/functional/bind.hpp>
 #include <internal/functional/function.hpp>