Index: uspace/lib/packet/include/packet_server.h
===================================================================
--- uspace/lib/packet/include/packet_server.h	(revision 7e1f9b7138c76a3ff70800594a3cae2de37a1c43)
+++ uspace/lib/packet/include/packet_server.h	(revision 00c2d0353f86dcf5afd8ee269a54de87fc0d6728)
@@ -48,5 +48,5 @@
 
 extern int packet_server_message(ipc_callid_t, ipc_call_t *, ipc_call_t *,
-    int *);
+    size_t *);
 
 #endif