diff --git a/src/AIoTC_Config.h b/src/AIoTC_Config.h
index 7fd515395..b4c6915a8 100644
--- a/src/AIoTC_Config.h
+++ b/src/AIoTC_Config.h
@@ -43,7 +43,7 @@
 #endif
 
 #ifndef DBG_VERBOSE
-  #define DBG_VERBOSE(fmt, ...) //Debug.print(DBG_VERBOSE, fmt, ## __VA_ARGS__)
+  #define DBG_VERBOSE(fmt, ...) Debug.print(DBG_VERBOSE, fmt, ## __VA_ARGS__)
 #endif
 
 /******************************************************************************
diff --git a/src/ArduinoIoTCloudTCP.cpp b/src/ArduinoIoTCloudTCP.cpp
index d84851bcc..a3f169016 100644
--- a/src/ArduinoIoTCloudTCP.cpp
+++ b/src/ArduinoIoTCloudTCP.cpp
@@ -65,8 +65,6 @@ ArduinoIoTCloudTCP::ArduinoIoTCloudTCP()
 , _password("")
   #endif
 , _mqttClient{nullptr}
-, _stdinTopic("")
-, _stdoutTopic("")
 , _shadowTopicOut("")
 , _shadowTopicIn("")
 , _dataTopicOut("")
@@ -132,8 +130,6 @@ int ArduinoIoTCloudTCP::begin(String brokerAddress, uint16_t brokerPort)
   _mqttClient.setConnectionTimeout(1500);
   _mqttClient.setId(getDeviceId().c_str());
 
-  _stdinTopic     = getTopic_stdin();
-  _stdoutTopic    = getTopic_stdout();
   _shadowTopicOut = getTopic_shadowout();
   _shadowTopicIn  = getTopic_shadowin();
   _dataTopicOut   = getTopic_dataout();
@@ -220,12 +216,6 @@ ArduinoIoTCloudTCP::State ArduinoIoTCloudTCP::handle_ConnectMqttBroker()
 
 ArduinoIoTCloudTCP::State ArduinoIoTCloudTCP::handle_SubscribeMqttTopics()
 {
-  if (!_mqttClient.subscribe(_stdinTopic))
-  {
-    DBG_ERROR("ArduinoIoTCloudTCP::%s could not subscribe to %s", __FUNCTION__, _stdinTopic.c_str());
-    return State::SubscribeMqttTopics;
-  }
-
   if (!_mqttClient.subscribe(_dataTopicIn))
   {
     DBG_ERROR("ArduinoIoTCloudTCP::%s could not subscribe to %s", __FUNCTION__, _dataTopicIn.c_str());
diff --git a/src/ArduinoIoTCloudTCP.h b/src/ArduinoIoTCloudTCP.h
index 3dc76dc61..dd99cfd7f 100644
--- a/src/ArduinoIoTCloudTCP.h
+++ b/src/ArduinoIoTCloudTCP.h
@@ -108,9 +108,6 @@ class ArduinoIoTCloudTCP: public ArduinoIoTCloudClass
 
     MqttClient _mqttClient;
 
-    // Class attribute to define MTTQ topics 2 for stdIn/out and 2 for data, in order to avoid getting previous pupblished payload
-    String _stdinTopic;
-    String _stdoutTopic;
     String _shadowTopicOut;
     String _shadowTopicIn;
     String _dataTopicOut;
@@ -123,8 +120,6 @@ class ArduinoIoTCloudTCP: public ArduinoIoTCloudClass
     bool _ota_req;
 #endif /* OTA_ENABLED */
 
-    inline String getTopic_stdin    () { return String("/a/d/" + getDeviceId() + "/s/i"); }
-    inline String getTopic_stdout   () { return String("/a/d/" + getDeviceId() + "/s/o"); }
     inline String getTopic_shadowout() { return ( getThingId().length() == 0) ? String("")                            : String("/a/t/" + getThingId() + "/shadow/o"); }
     inline String getTopic_shadowin () { return ( getThingId().length() == 0) ? String("")                            : String("/a/t/" + getThingId() + "/shadow/i"); }
     inline String getTopic_dataout  () { return ( getThingId().length() == 0) ? String("/a/d/" + getDeviceId() + "/e/o") : String("/a/t/" + getThingId() + "/e/o"); }