diff --git a/kamailio/registrar-role.cfg b/kamailio/registrar-role.cfg
index c85ba21..e91fca0 100644
--- a/kamailio/registrar-role.cfg
+++ b/kamailio/registrar-role.cfg
@@ -75,9 +75,7 @@ route[ATTEMPT_AUTHORIZATION]
     $var(single_contact) = $(ct{s.select,0,,});
 
     $xavp(regcfg=>match_received) = $su;
-    $xavp(regcfg[0]=>match_contact) = $(var(single_contact){nameaddr.uri});
-
-    if ($sht(auth_cache=>$Au) != $null && registered("location", "$rz:$Au", 6) == 1) {
+    if ($sht(auth_cache=>$Au) != $null && registered("location", "$rz:$Au", 2, 1) == 1) {
         xlog("L_INFO", "$ci|log|authenticating $fu via cached SIP creds");
         $var(password) = $sht(auth_cache=>$Au);
     } else {