diff --git a/vmnotify b/vmnotify
index 8c8d4ac..efc7677 100755
--- a/vmnotify
+++ b/vmnotify
@@ -230,7 +230,10 @@ sub main {
         $data{callid} = gen_callid().'@voip.sipwise.local';
 
         send_mwi_notify();
-        send_ext_notify() if $extended;
+        if ($extended &&
+            $CONFIG->{EXT_NOTIFY} && $CONFIG->{EXT_NOTIFY} eq "yes") {
+            send_ext_notify();
+        }
     };
     if ($EVAL_ERROR) {
         $log->error($EVAL_ERROR);
diff --git a/vmnotify.conf b/vmnotify.conf
index 2aeaa20..f81c196 100644
--- a/vmnotify.conf
+++ b/vmnotify.conf
@@ -1,8 +1,5 @@
-SERVER="127.0.0.1:5060"
-LOCAL_IP="127.0.0.1"
-FILE_DEBUG="0"
-CONSOLE_DEBUG="0"
-VERBOSE=""
-SIPSAK=`which sipsak`
-UUIDGEN=`which uuidgen`
+SERVER=127.0.0.1:5060
+LOCAL_IP=127.0.0.1
+DEBUG=0
 SIPFILE="/etc/ngcp-vmnotify/mwi.sip"
+EXT_NOTIFY=no