diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index 43a8c44b..21892ac3 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -203,7 +203,7 @@
       "address6": "IPv6 Address",
       "serverAllowedIps": "Server Allowed IPs",
       "firewallIps": "Firewall Allowed IPs",
-      "firewallIpsInvalid": "Invalid firewall IP entry. Must be: IP (10.0.0.1), CIDR (10.0.0.0/24), IP:port (10.0.0.1:443), or IP:port/protocol (10.0.0.1:443/tcp)"
+      "firewallIpsInvalid": "Invalid firewall IP entry. Must be: IP (10.0.0.1), CIDR (10.0.0.0/24), IP:port (10.0.0.1:443), CIDR:port (10.0.0.0/24:443), IP:port/protocol (10.0.0.1:443/tcp), or IPv6 ([::1], [::1]:443, [::1]:443/udp)"
     },
     "user": {
       "username": "Username",