diff -Nur -x '*.orig' -x '*~' nttcp-1.47/nttcp.c nttcp-1.47.new/nttcp.c
--- nttcp-1.47/nttcp.c	2000-12-18 05:16:54.000000000 -0500
+++ nttcp-1.47.new/nttcp.c	2012-01-30 23:44:02.260501225 -0500
@@ -372,7 +372,7 @@
 #define Message(x)	fMessage(stdout, x)
 
 void Exit(char *s, int ret) {
-    syslog(LOG_DEBUG, s);
+    syslog(LOG_DEBUG, "%s", s);
     fMessage(stderr,s);
     exit(ret);
 }