Index: uspace/app/trace/ipcp.c
===================================================================
--- uspace/app/trace/ipcp.c	(revision 1569a9b70f7219a7103788305e4baf473da24376)
+++ uspace/app/trace/ipcp.c	(revision da9d6cae9d1c35542e015f3d2826946a83fef587)
@@ -250,5 +250,5 @@
 	sysarg_t method;
 	sysarg_t service;
-	int retval;
+	errno_t retval;
 	proto_t *proto;
 	int cphone;
@@ -345,5 +345,5 @@
 }
 
-void ipcp_hangup(int phone, int rc)
+void ipcp_hangup(int phone, errno_t rc)
 {
 	if ((display_mask & DM_SYSTEM) != 0) {