--- networking/telnetd.c
+++ networking/telnetd.c
@@ -106,8 +106,8 @@
 //usage:	IF_NOT_FEATURE_TELNETD_STANDALONE(" via inetd") "\n"
 //usage:     "\n	-l LOGIN	Exec LOGIN on connect"
 //usage:     "\n	-f ISSUE_FILE	Display ISSUE_FILE instead of /etc/issue"
-//usage:     "\n	-K		Close connection as soon as login exits"
-//usage:     "\n			(normally wait until all programs close slave pty)"
+//usage:     "\n	-K		Do not close connection as soon as login exits,"
+//usage:     "\n			but wait until all programs close slave pty"
 //usage:	IF_FEATURE_TELNETD_STANDALONE(
 //usage:     "\n	-p PORT		Port to listen on. Default "STR(CONFIG_FEATURE_TELNETD_PORT_DEFAULT)
 //usage:     "\n	-b ADDR[:PORT]	Address to bind to"
@@ -732,7 +732,7 @@
 	/* We don't want to die if just one session is broken */
 	signal(SIGPIPE, SIG_IGN);
 
-	if (opt & OPT_WATCHCHILD)
+	if (!(opt & OPT_WATCHCHILD))
 		signal(SIGCHLD, handle_sigchld);
 	else /* prevent dead children from becoming zombies */
 		signal(SIGCHLD, SIG_IGN);