diff --git a/kamailio/default.cfg b/kamailio/default.cfg
index 1333b14..dfb8aa4 100644
--- a/kamailio/default.cfg
+++ b/kamailio/default.cfg
@@ -12,7 +12,6 @@
 #!trydef FLT_AOR 9
 #!trydef FLT_T38 10
 #!trydef FLT_NATS 11
-#!trydef FLB_NATB 12
 
 ####### Global Parameters #########
 fork = yes