diff --git a/kamailio/registrar-role.cfg b/kamailio/registrar-role.cfg
index 2a3f4e2..f56ea85 100644
--- a/kamailio/registrar-role.cfg
+++ b/kamailio/registrar-role.cfg
@@ -39,7 +39,7 @@ modparam("registrar", "received_avp", "$avp(AVP_RECV_PARAM)")
 modparam("registrar", "min_expires", REGISTRAR_MIN_EXPIRES)
 modparam("registrar", "max_expires", REGISTRAR_MAX_EXPIRES)
 modparam("registrar", "xavp_cfg", "regcfg")
-modparam("registrar", "reg_match_flag", 1)
+modparam("registrar", "reg_on_match_flag", 1)
 
 
 ####### Registrar Logic ########