diff --git a/DCCEXParser.cpp b/DCCEXParser.cpp
index 387d277..bc2045e 100644
--- a/DCCEXParser.cpp
+++ b/DCCEXParser.cpp
@@ -56,7 +56,7 @@ const int16_t HASH_KEYWORD_LCN = 15137;
 const int16_t HASH_KEYWORD_RESET = 26133;
 const int16_t HASH_KEYWORD_SPEED28 = -17064;
 const int16_t HASH_KEYWORD_SPEED128 = 25816;
-const int16_t HASH_KEYWORD_MQTT = 11111;
+const int16_t HASH_KEYWORD_MQTT = 28220;
 
 int16_t DCCEXParser::stashP[MAX_COMMAND_PARAMS];
 bool DCCEXParser::stashBusy;
@@ -803,6 +803,10 @@ bool DCCEXParser::parseD(Print *stream, int16_t params, int16_t p[])
 	StringFormatter::send(stream, F("128 Speedsteps"));
         return true;
 
+    case HASH_KEYWORD_MQTT: // <D LCN ON/OFF>
+        Diag::MQTT = onOff;
+        return true;
+
     default: // invalid/unknown
         break;
     }
diff --git a/StringFormatter.h b/StringFormatter.h
index 50ce0f7..2758fec 100644
--- a/StringFormatter.h
+++ b/StringFormatter.h
@@ -34,6 +34,7 @@ class Diag {
   static bool WITHROTTLE;
   static bool ETHERNET;
   static bool LCN;
+  static bool MQTT;
   
 };