--- wall.c.old	2010-11-15 01:52:57.491296622 +0100
+++ wall.c	2010-11-15 01:53:33.953640281 +0100
@@ -109,7 +109,7 @@
   }
 
   openlog("wall", LOG_PID, LOG_USER);
-  syslog(LOG_INFO, "wall: user %s broadcasted %d lines (%d chars)",
+  syslog(LOG_INFO, "wall: user %s broadcasted %d lines (%zu chars)",
 	whoami, i, strlen(buf));
   closelog();