diff --git a/Whisper-Push-Notifications.md b/Whisper-Push-Notifications.md
index 11f7026..7c116bf 100644
--- a/Whisper-Push-Notifications.md
+++ b/Whisper-Push-Notifications.md
@@ -52,7 +52,7 @@ var sendDiscoveryRequest = function (identity) {
 ```
 
 Here is the list of topics (see the full sample file, where they are all used):
-```
+```js
 var discoverServerTopic = '0x268302f3'; // DISCOVER_NOTIFICATION_SERVER
 var proposeServerTopic = '0x08e3d8c0'; // PROPOSE_NOTIFICATION_SERVER
 var acceptServerTopic = '0x04f7dea6'; // ACCEPT_NOTIFICATION_SERVER
@@ -78,24 +78,21 @@ statusd --datadir app2 --http --httpport 8745 --shh
 
 # Workflow: Discovery, Subscription, Chat Management, Notification Triggering
 
-Original workflow for discovery mechanism was introduced in:
-
-[![image](https://cloud.githubusercontent.com/assets/188194/24608168/19317cdc-187e-11e7-995e-2adadc17a91c.png)](https://cloud.githubusercontent.com/assets/188194/24608168/19317cdc-187e-11e7-995e-2adadc17a91c.png)
-
 ### 1. Discovery request and Notification Server selection
 
-Everything starts with `Device A` willing to register with some Notification Service Provider. To do so, it sends/broadcasts discovery request:
+Everything starts with `Device A` willing to register with some Notification Service Provider. To do so, it sends discovery request *to some known cluster* (as you need to specify PubKey used on wnode side):
 
 ```js
+var protocolKey = '0x040edb0d71a3dbe928e154fcb696ffbda359b153a90efc2b46f0043ce9f5dbe55b77b9328fd841a1db5273758624afadd5b39638d4c35b36b3a96e1a586c1b4c2a';
 var discoverServerTopic = '0x268302f3'; // DISCOVER_NOTIFICATION_SERVER
 var sendDiscoveryRequest = function (identity) {
-    // notification server discovery request is a signed (sent from us) broadcast,
-    // encrypted with Notification Protocol Symmetric Key (which is publicly known)
+    // notification server discovery request is a signed (sent from us),
+    // encrypted with Notification Protocol Asymmetric (Public) Key
     var err = web3.shh.post({
         from: identity,
+        to: protocolKey,
         topics: [discoverServerTopic],
-        ttl: 20,
-        keyname: 'NOTIFICATION_PROTOCOL_KEY'
+        ttl: 20
     });
     if (err !== null) {
         console.log("message NOT sent")
@@ -103,7 +100,6 @@ var sendDiscoveryRequest = function (identity) {
         console.log("message sent OK")
     }
 };
-
 var identity = web3.shh.newIdentity();
 sendDiscoveryRequest(identity);
 ```