diff -up netkit-rwho-0.17/ruptime/ruptime.c.stderr netkit-rwho-0.17/ruptime/ruptime.c
--- netkit-rwho-0.17/ruptime/ruptime.c.stderr	2012-11-07 08:29:27.024731591 +0100
+++ netkit-rwho-0.17/ruptime/ruptime.c	2012-11-07 08:29:52.906741963 +0100
@@ -186,7 +186,7 @@ main(int argc, char **argv)
 		hsp++;
 	}
 	if (!nhosts) {
-		(void)printf("ruptime: no hosts in %s.\n", _PATH_RWHODIR);
+		(void)fprintf(stderr, "ruptime: no hosts in %s.\n", _PATH_RWHODIR);
 		exit(1);
 	}
 	(void)time(&now);
diff -up netkit-rwho-0.17/rwho/rwho.c.stderr netkit-rwho-0.17/rwho/rwho.c
--- netkit-rwho-0.17/rwho/rwho.c.stderr	2012-11-07 08:37:47.539978797 +0100
+++ netkit-rwho-0.17/rwho/rwho.c	2012-11-07 08:33:00.651829733 +0100
@@ -155,7 +155,7 @@ main(int argc, char *argv[])
 				continue;
 			}
 			if (nusers >= NUSERS) {
-				printf("too many users\n");
+				fprintf(stderr, "too many users\n");
 				exit(1);
 			}