diff -Nur pam_krb5_snap-2003.06.01.orig/pam_krb5afs.c pam_krb5_snap-2003.06.01/pam_krb5afs.c
--- pam_krb5_snap-2003.06.01.orig/pam_krb5afs.c	2003-06-01 23:42:45.000000000 +0200
+++ pam_krb5_snap-2003.06.01/pam_krb5afs.c	2004-10-09 22:31:22.134322249 +0200
@@ -1089,6 +1089,7 @@
 			   ret->retain_token, &ret->retain_token);
 
 	/* The default realm we assume users are in unless told otherwise. */
+	ret->realm[0] = 0;
 	krb5_get_default_realm(context, &ret->realm);
 	appdefault_string(context, "realm", argc, argv,
 			  ret->realm, &ret->realm);