diff --git a/openvpn-install.sh b/openvpn-install.sh
index ee420ca..2a067b3 100644
--- a/openvpn-install.sh
+++ b/openvpn-install.sh
@@ -267,6 +267,7 @@ auth SHA512
 tls-auth ta.key 0
 topology subnet
 server 10.8.0.0 255.255.255.0
+duplicate-cn
 ifconfig-pool-persist ipp.txt" > /etc/openvpn/server.conf
 	echo 'push "redirect-gateway def1 bypass-dhcp"' >> /etc/openvpn/server.conf
 	# DNS
@@ -422,4 +423,4 @@ verb 3" > /etc/openvpn/client-common.txt
 	echo ""
 	echo "Your client configuration is available at" ~/"$CLIENT.ovpn"
 	echo "If you want to add more clients, you simply need to run this script again!"
-fi
\ No newline at end of file
+fi