Index: uspace/lib/c/include/async.h
===================================================================
--- uspace/lib/c/include/async.h	(revision 4805495a910f793f8918c13f029a38a5bb548154)
+++ uspace/lib/c/include/async.h	(revision b742f8a725962590019dea1095844ff4460324ce)
@@ -275,8 +275,8 @@
 
 extern async_sess_t *async_connect_me_to(async_exch_t *, iface_t, sysarg_t,
-    sysarg_t);
+    sysarg_t, errno_t *);
 extern async_sess_t *async_connect_me_to_blocking(async_exch_t *, iface_t,
-    sysarg_t, sysarg_t);
-extern async_sess_t *async_connect_kbox(task_id_t);
+    sysarg_t, sysarg_t, errno_t *);
+extern async_sess_t *async_connect_kbox(task_id_t, errno_t *);
 
 extern errno_t async_connect_to_me(async_exch_t *, iface_t, sysarg_t, sysarg_t);