diff --git a/examples/scripts/wot-servient.conf.json b/examples/scripts/wot-servient.conf.json
index dcf184bc3..d1ca42c63 100644
--- a/examples/scripts/wot-servient.conf.json
+++ b/examples/scripts/wot-servient.conf.json
@@ -13,6 +13,9 @@
     },
     "_mqtt" : {
         "broker" : "mqtt://test.mosquitto.org",
+        "username" : "username",
+        "password" : "password",
+	"clientId" : "uniqueId",
         "port": 1883 
     },
     "log": {
diff --git a/packages/binding-mqtt/README.md b/packages/binding-mqtt/README.md
index a048644cd..dc712c8e7 100644
--- a/packages/binding-mqtt/README.md
+++ b/packages/binding-mqtt/README.md
@@ -20,13 +20,16 @@ Setup node-wot as described at the [node-wot main page](./../../README.md).
 
 There are sample implementations provided in the [example/scripting folder](./examples/scripts):
 
-* example-mqtt-publish.js: Shows when node-wot act as a MQTT Client that publish data (latest counter value) to a broker. In the same time the client setup an action (reset counter) that can be initated by another MQTT client by sending a publication message to this action based topic. Please note to provide MQTT broker details (host, port, [username], [password]) in the wot-servient.conf.json:
+* example-mqtt-publish.js: Shows when node-wot act as a MQTT Client that publish data (latest counter value) to a broker. In the same time the client setup an action (reset counter) that can be initated by another MQTT client by sending a publication message to this action based topic. Please note to provide MQTT broker details (host, port, [username], [password], [clientId]) in the wot-servient.conf.json:
 
 
 ```
 {
     "mqtt" : {
         "host" : "mqtt://test.mosquitto.org",
+        "username" : "username",
+        "password" : "password",
+		"clientId" : "uniqueId",
         "port": 1883 
     }
 }
@@ -62,4 +65,4 @@ Start the script by the command `wot-servient -c mqtt-subscribe.js` or `node ../
         } 
     } 
 }
-```
\ No newline at end of file
+```
diff --git a/packages/binding-mqtt/src/mqtt-broker-server.ts b/packages/binding-mqtt/src/mqtt-broker-server.ts
index 0b7a43c3b..59d825ada 100644
--- a/packages/binding-mqtt/src/mqtt-broker-server.ts
+++ b/packages/binding-mqtt/src/mqtt-broker-server.ts
@@ -34,13 +34,16 @@ export default class MqttBrokerServer implements ProtocolServer {
   private user: string = undefined; // in the case usesername is required to connect the broker
 
   private psw: string = undefined; // in the case password is required to connect the broker
+  
+  private clientId: string = undefined; // in the case clientId can be used to identify the device
+  
   private brokerURI: string = undefined;
 
   private readonly things: Map<string, ExposedThing> = new Map<string, ExposedThing>();
 
   private broker: any;
 
-  constructor(uri: string, user?: string, psw?: string) {
+  constructor(uri: string, user?: string, psw?: string, clientId?: string) {
     if (uri !== undefined) {
 
       //if there is a MQTT protocol identicator missing, add this
@@ -56,6 +59,9 @@ export default class MqttBrokerServer implements ProtocolServer {
     if (psw !== undefined) {
       this.psw = psw;
     }
+    if (clientId !== undefined) {
+      this.clientId = clientId;
+    }	
   }
 
   public expose(thing: ExposedThing): Promise<void> {
@@ -164,10 +170,14 @@ export default class MqttBrokerServer implements ProtocolServer {
           console.info(`MqttBrokerServer trying to connect to broker at ${this.brokerURI}`);
           // TODO test if mqtt extracts port from passed URI (this.address)
           this.broker = mqtt.connect(this.brokerURI);
-        } else {
+        } else if (this.clientId === undefined) {
           console.info(`MqttBrokerServer trying to connect to secured broker at ${this.brokerURI}`);
           // TODO test if mqtt extracts port from passed URI (this.address)
           this.broker = mqtt.connect(this.brokerURI, { username: this.user, password: this.psw });
+        } else {
+          console.info(`MqttBrokerServer trying to connect to secured broker at ${this.brokerURI} with client ID ${this.clientId}`);
+          // TODO test if mqtt extracts port from passed URI (this.address)
+          this.broker = mqtt.connect(this.brokerURI, { username: this.user, password: this.psw, clientId: this.clientId });
         }
 
         this.broker.on("connect", () => {
diff --git a/packages/cli/src/cli-default-servient.ts b/packages/cli/src/cli-default-servient.ts
index 7096dcc4b..56f9ea7a9 100644
--- a/packages/cli/src/cli-default-servient.ts
+++ b/packages/cli/src/cli-default-servient.ts
@@ -89,7 +89,7 @@ export default class DefaultServient extends Servient {
                 this.addServer(coapServer);
             }
             if (this.config.mqtt !== undefined) {
-                let mqttBrokerServer = new MqttBrokerServer(this.config.mqtt.broker, (typeof this.config.mqtt.username === "string") ? this.config.mqtt.username : undefined, (typeof this.config.mqtt.password === "number") ? this.config.mqtt.password : undefined);
+                let mqttBrokerServer = new MqttBrokerServer(this.config.mqtt.broker, (typeof this.config.mqtt.username === "string") ? this.config.mqtt.username : undefined, (typeof this.config.mqtt.password === "string") ? this.config.mqtt.password : undefined, (typeof this.config.mqtt.clientId === "string") ? this.config.mqtt.clientId : undefined);
                 this.addServer(mqttBrokerServer);
             }
         }