diff --git a/openvpn-server/conf/server.conf b/openvpn-server/conf/server.conf
index 532aa2b9f..473cd6977 100644
--- a/openvpn-server/conf/server.conf
+++ b/openvpn-server/conf/server.conf
@@ -10,7 +10,9 @@ key /etc/openvpn/secrets/server.key  # This file should be kept secret
 
 tls-version-min 1.3 or-highest
 tls-cipher TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384
-ncp-ciphers AES-256-GCM
+data-ciphers AES-256-GCM
+# Fallback for OpenVPN before version 2.5, use "-" to disable support.
+data-ciphers-fallback AES-256-GCM
 auth SHA256
 dh none
 ecdh-curve secp384r1