diff --git a/appl/ftp/ftp/cmds.c b/appl/ftp/ftp/cmds.c
index 443d866ad..3981cdeeb 100644
--- a/appl/ftp/ftp/cmds.c
+++ b/appl/ftp/ftp/cmds.c
@@ -1457,6 +1457,7 @@ disconnect(int argc, char **argv)
 	}
 	cout = NULL;
 	connected = 0;
+	krb4_quit();
 	data = -1;
 	if (!proxy) {
 		macnum = 0;
diff --git a/appl/ftp/ftp/krb4.c b/appl/ftp/ftp/krb4.c
index 1a56150f7..c13719cac 100644
--- a/appl/ftp/ftp/krb4.c
+++ b/appl/ftp/ftp/krb4.c
@@ -420,6 +420,12 @@ do_klogin(char *host)
     return 0;
 }
 
+void
+krb4_quit(void)
+{
+  auth_complete = 0;
+}
+
 int krb4_write_enc(FILE *F, char *fmt, va_list ap)
 {
     int len;
diff --git a/appl/ftp/ftp/krb4.h b/appl/ftp/ftp/krb4.h
index bd6fcfb2b..a0f3e35db 100644
--- a/appl/ftp/ftp/krb4.h
+++ b/appl/ftp/ftp/krb4.h
@@ -9,4 +9,6 @@ void sec_prot(int, char**);
 
 void kauth(int, char **);
 
+void krb4_quit(void);
+
 #endif /* __KRB4_H__ */