--- libaitcli/src/aitcli.c	2013/11/20 16:26:51	1.10
+++ libaitcli/src/aitcli.c	2013/11/20 16:40:02	1.11
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: aitcli.c,v 1.10 2013/11/20 16:26:51 misho Exp $
+* $Id: aitcli.c,v 1.11 2013/11/20 16:40:02 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -1281,7 +1281,7 @@ cliReadLine(linebuffer_t * __restrict cli_buffer, int 
 	if (!cli_buffer) {
 		cli_SetErr(EINVAL, "Invalid input parameters ...");
 		return NULL;
-	} else
+	} else if (timeout > 0)
 		timeout *= 1000;	/* convert from sec to ms */
 
 	memset(&fds, 0, sizeof fds);