diff --git a/openvpn-install.sh b/openvpn-install.sh
index 5481696..4c5980f 100644
--- a/openvpn-install.sh
+++ b/openvpn-install.sh
@@ -59,12 +59,18 @@ RemainAfterExit=yes
 [Install]
 WantedBy=multi-user.target" > /etc/systemd/system/rc-local.service
 	systemctl enable rc-local.service
-	touch /etc/rc.local
+	if ! grep '#!' $RCLOCAL; then
+		echo "#!/bin/bash" > $RCLOCAL
+	fi
 else
 	echo "Looks like you aren't running this installer on a Debian, Ubuntu, CentOS or ArchLinux system"
 	exit 4
 fi
 
+if [[ ! -e /etc/sysctl.conf ]]; then
+	touch /etc/sysctl.conf
+fi
+
 newclient () {
 	# Generates the custom client.ovpn
 	cp /etc/openvpn/client-common.txt ~/$1.ovpn