diff --git a/net/haproxy/src/opnsense/mvc/app/models/OPNsense/HAProxy/HAProxy.xml b/net/haproxy/src/opnsense/mvc/app/models/OPNsense/HAProxy/HAProxy.xml
index 2869c09d5..8fc4f7a0c 100644
--- a/net/haproxy/src/opnsense/mvc/app/models/OPNsense/HAProxy/HAProxy.xml
+++ b/net/haproxy/src/opnsense/mvc/app/models/OPNsense/HAProxy/HAProxy.xml
@@ -369,7 +369,7 @@
                     <multiple>Y</multiple>
                     <mask>/^((([0-9a-zA-Z._\-\*:\[\]]+:[0-9]+(-[0-9]+)?)([,]){0,1}))*/u</mask>
                     <ChangeCase>lower</ChangeCase>
-                    <ValidationMessage>Please provide a valid listen address, i.e. 127.0.0.1:8080 or www.example.com:443. Port range as start-end, i.e. 127.0.0.1:1220-1240.</ValidationMessage>
+                    <ValidationMessage>Please provide a valid listen address, i.e. 127.0.0.1:8080, [::1]:8080 or www.example.com:443. Port range as start-end, i.e. 127.0.0.1:1220-1240.</ValidationMessage>
                 </bind>
                 <bindOptions type="TextField">
                     <Required>N</Required>