diff --git a/packages/microservices/server/server-mqtt.ts b/packages/microservices/server/server-mqtt.ts
index 46a647a7a9c..7568e7f0678 100644
--- a/packages/microservices/server/server-mqtt.ts
+++ b/packages/microservices/server/server-mqtt.ts
@@ -29,8 +29,9 @@ let mqttPackage: any = {};
 export class ServerMqtt extends Server implements CustomTransportStrategy {
   public readonly transportId = Transport.MQTT;
 
+  protected mqttClient: MqttClient;
+
   private readonly url: string;
-  private mqttClient: MqttClient;
 
   constructor(private readonly options: MqttOptions['options']) {
     super();
diff --git a/packages/microservices/server/server-tcp.ts b/packages/microservices/server/server-tcp.ts
index 7a14e60ba88..bffeb158a7c 100644
--- a/packages/microservices/server/server-tcp.ts
+++ b/packages/microservices/server/server-tcp.ts
@@ -28,10 +28,11 @@ import { Server } from './server';
 export class ServerTCP extends Server implements CustomTransportStrategy {
   public readonly transportId = Transport.TCP;
 
+  protected server: NetSocket;
+
   private readonly port: number;
   private readonly host: string;
   private readonly socketClass: Type<TcpSocket>;
-  private server: NetSocket;
   private isExplicitlyTerminated = false;
   private retryAttemptsCount = 0;