diff --git a/install.sh b/install.sh
index 983a6f7..a89c9f8 100644
--- a/install.sh
+++ b/install.sh
@@ -34,7 +34,8 @@ loginuser ALL=(ALL) NOPASSWD: /usr/bin/systemctl status chromium-monitor, /usr/b
 loginuser ALL=(ALL) NOPASSWD: /usr/bin/cat /var/lib/dhcp/*
 loginuser ALL=(ALL) NOPASSWD: /usr/bin/cp /etc/watchdog.conf /etc/watchdog.conf.bak
 loginuser ALL=(ALL) NOPASSWD: /usr/bin/tee /etc/watchdog.conf, /usr/bin/tee -a /etc/watchdog.conf
-loginuser ALL=(ALL) NOPASSWD: /usr/bin/sed -i * /etc/hosts, /usr/bin/sed -r
+loginuser ALL=(ALL) NOPASSWD: /usr/bin/sed -i
+loginuser ALL=(ALL) NOPASSWD: /usr/bin/sed -r 's/[x]+/,/g'
 loginuser ALL=(ALL) NOPASSWD: /usr/bin/fbset -s
 loginuser ALL=(ALL) NOPASSWD: /usr/bin/hostnamectl set-hostname
 loginuser ALL=(ALL) NOPASSWD: /usr/sbin/dhclient eth0