Index: uspace/lib/hound/include/hound/protocol.h
===================================================================
--- uspace/lib/hound/include/hound/protocol.h	(revision cc3c27ad65c204fa389a65354d811ea60d682915)
+++ uspace/lib/hound/include/hound/protocol.h	(revision aab8e3d30693d2db733f2887b6b850c66fe275d3)
@@ -38,4 +38,5 @@
 
 #include <async.h>
+#include <errno.h>
 #include <pcm/format.h>
 
@@ -55,5 +56,5 @@
 
 typedef async_sess_t hound_sess_t;
-typedef int hound_context_id_t;
+typedef intptr_t hound_context_id_t;
 
 static inline int hound_context_id_err(hound_context_id_t id)