diff --git a/perl-script/conf/lyctl.sh b/perl-script/conf/lyctl.sh
index 8128f2c..a0dc93c 100755
--- a/perl-script/conf/lyctl.sh
+++ b/perl-script/conf/lyctl.sh
@@ -1,4 +1,4 @@
-#!/usr/local/bin/bash
+#!/bin/ksh
 
 ACMD="$1"
 ARGV="$@"