--- libaitio/src/pty.c	2013/05/30 09:10:13	1.5
+++ libaitio/src/pty.c	2013/11/25 11:40:04	1.6
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: pty.c,v 1.5 2013/05/30 09:10:13 misho Exp $
+* $Id: pty.c,v 1.6 2013/11/25 11:40:04 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -92,7 +92,7 @@ ioFreePTY(int ptyfd, const char *ttyname)
 
 	if (ptyfd != -1)
 		close(ptyfd);
-	if (ttyname) {
+	if (*ttyname) {
 		chown(ttyname, (uid_t) 0, (gid_t) 0);
 		chmod(ttyname, (mode_t) 0666);
 	}