diff --git a/kdc/main.c b/kdc/main.c
index 7b970fada..ec4fe5002 100644
--- a/kdc/main.c
+++ b/kdc/main.c
@@ -42,17 +42,41 @@ RCSID("$Id$");
 
 sig_atomic_t exit_flag = 0;
 
+int require_enc_timestamp = 1;
+
 static RETSIGTYPE
 sigterm(int sig)
 {
     exit_flag = 1;
 }
 
+void
+usage(void)
+{
+    fprintf(stderr, "Usage: %s [-p]\n", __progname);
+    exit(1);
+}
+
 int
 main(int argc, char **argv)
 {
     krb5_context context;
     des_cblock key;
+    int c;
+    set_progname(argv[0]);
+    while((c = getopt(argc, argv, "p")) != -1){
+	switch(c){
+	case 'p':
+	    require_enc_timestamp = 0;
+	    break;
+	default:
+	    usage();
+	}
+    }
+    argc -= optind;
+    argv += optind;
+    if(argc)
+	usage();
     des_new_random_key(&key);
     memset(&key, 0, sizeof(key));
     signal(SIGINT, sigterm);