diff --git a/conf/sip_profiles/default.xml b/conf/sip_profiles/default.xml
index 5ea701ab10..3f3fad193a 100644
--- a/conf/sip_profiles/default.xml
+++ b/conf/sip_profiles/default.xml
@@ -53,6 +53,7 @@
     <param name="inbound-codec-negotiation" value="generous"/>
     <!-- if you want to send any special bind params of your own -->
     <!--<param name="bind-params" value="transport=udp"/>-->
+    <!--<param name="unregister-on-options-fail" value="true"/>-->
 
     <!-- TLS: disabled by default, set to "true" to enable -->
     <param name="tls" value="false"/>