diff -up netkit-ftp-0.17/ftp/cmds.c.orig netkit-ftp-0.17/ftp/cmds.c

--- netkit-ftp-0.17/ftp/cmds.c.orig	2011-09-05 14:41:34.000000000 +0200

+++ netkit-ftp-0.17/ftp/cmds.c	2011-09-05 14:44:44.000000000 +0200

@@ -499,6 +499,9 @@ usage:

 	}

 	sendrequest(cmd, argv[1], argv[2],

 	    argv[1] != oldargv1 || argv[2] != oldargv2);

+	if (argv[1] != oldargv1) {

+		free(argv[1]);

+	}

 }

 void mabort(int);