diff --git a/conf.d/ysipchan.conf.sample b/conf.d/ysipchan.conf.sample
index 2d4bf8b8..951e76ca 100644
--- a/conf.d/ysipchan.conf.sample
+++ b/conf.d/ysipchan.conf.sample
@@ -10,6 +10,10 @@
 ; useragent: string: String to set in User-Agent or Server headers
 ;useragent=YATE/0.9.0
 
+; registrar: bool: Allow the SIP module to receive registration requests
+;registrar=disable
+
+
 [codecs]
 ; This section allows to individually enable or disable the codecs