diff --git a/src/mod/endpoints/mod_h323/h323.conf.xml b/src/mod/endpoints/mod_h323/h323.conf.xml
index 86bdae1d62..f4b246c2d3 100644
--- a/src/mod/endpoints/mod_h323/h323.conf.xml
+++ b/src/mod/endpoints/mod_h323/h323.conf.xml
@@ -6,7 +6,7 @@
     <param name="codec-prefs" value="PCMA,GSM,G729,G726"/>
     <param name="gk-address" value=""/>    <!-- empty to disable, "*" to search LAN -->
     <param name="gk-identifer" value=""/>  <!-- optional name of gk -->
-    <param name="gk-interface" value=""/>  <!-- optional listener interface name -->
+    <param name="gk-interface" value=""/>  <!-- mandatory listener interface name -->
     <param name="gk-retry" value="30"/>  <!-- optional GK register retry timer -->
     <param name="faststart" value="true"/>  <!-- optional -->
     <param name="h245tunneling" value="true"/>  <!-- optional -->