diff --git a/kamailio/default.cfg b/kamailio/default.cfg
index c794c45..7591f31 100644
--- a/kamailio/default.cfg
+++ b/kamailio/default.cfg
@@ -160,13 +160,13 @@ modparam("htable", "htable", "redirects=>size=16;autoexpire=5")
 ######## Pseudo-Variables module ########
 loadmodule "pv.so"
 
-######## async operations module ########
-loadmodule "async.so"
-modparam("async", "workers", KZ_ASYNC_WORKERS)
-
 ####### RTIMER module ##########
 loadmodule "rtimer.so"
 
+####### evrexec module ##########
+loadmodule "evrexec.so"
+modparam("evrexec", "exec", "name=evrexec:DEFERRED_INIT;wait=20000000;workers=1;")
+
 ######## Advanced logger module ########
 loadmodule "xlog.so"
 
@@ -966,13 +966,7 @@ event_route[tm:local-request]
 }
 #!endif
 
-event_route[core:worker-one-init]
-{
-    async_route("DEFERRED_INIT", "20");
-}
-
-
-route[DEFERRED_INIT]
+event_route[evrexec:DEFERRED_INIT]
 {
     xlog("L_INFO", "processing deferred init\n");
 
diff --git a/kamailio/defs.cfg b/kamailio/defs.cfg
index 7581a4e..325e32d 100644
--- a/kamailio/defs.cfg
+++ b/kamailio/defs.cfg
@@ -5,8 +5,6 @@
 
 #!trydef KAZOO_LOG_LEVEL L_INFO
 
-#!trydef KZ_ASYNC_WORKERS 3
-
 #!ifndef KAMAILIO_DBMS
 #!substdef "!KAMAILIO_DBMS!kazoo!g"
 #!endif