Index: uspace/lib/cpp/include/internal/functional/hash.hpp
===================================================================
--- uspace/lib/cpp/include/internal/functional/hash.hpp	(revision 4fba7ada6e5216277a3183f4a0fbb2c5b1153db0)
+++ uspace/lib/cpp/include/internal/functional/hash.hpp	(revision 4dfac1e8d21ffd707212d76871080a4065054613)
@@ -31,4 +31,5 @@
 
 #include <cstdlib>
+#include <cstdint>
 
 namespace std