diff --git a/src/main.cpp b/src/main.cpp
index 9ab4ddb..b1c10d0 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -25,7 +25,6 @@
 /******************************************************************************
  *                                     DEFINES
  ******************************************************************************/
-#define FAN_ENABLED
 
 #define DELAY_TIME            1000 /**< time between measurements [ms] */
 #define MIN_FAN_SPEED_PERCENT 24 /**< minimum fan speed [%] */
@@ -57,7 +56,6 @@ static int mAutomaticTargetRPM = RPM_CONTROL_DEACTIVATED;
  *                            LOCAL FUNCTIONS
  ******************************************************************************/
 
-#ifdef FAN_ENABLED
 /**
  * @brief Get the Fan Speed in round per minutes
  * 
@@ -83,9 +81,6 @@ void setFanSpeedPercent(int p) {
   int value = (p / 100.0) * 255;
   analogWrite(FAN_PIN, value);
 }
-#else
-  uint8_t mRainbowIndex;
-#endif
 
 float readTemperature(void)
 {
@@ -125,14 +120,9 @@ void setup()
 
   SerialCmd_clearCmdArray();
 
-#ifdef FAN_ENABLED
   /* Setup FAN Control */
   pinMode(FAN_PIN, OUTPUT);
   pinMode(SIGNAL_PIN, INPUT);
-#else
-  Serial.println(F("\nFAN NOT enabled"));
-  mRainbowIndex = 0;
-#endif
 
   pixels->begin();
   pixels->clear();
@@ -185,7 +175,6 @@ void loop()
     fanSpeedPercent = (100 - MIN_FAN_SPEED_PERCENT) * (temp - MIN_TEMP) / (MAX_TEMP - MIN_TEMP) + MIN_FAN_SPEED_PERCENT;
   }
 
-#ifdef FAN_ENABLED
   if ((actualFanSpeedRpm >= 0) && (actualFanSpeedRpm < LOW_FAN_SPEED))
   {
     if (i > FAN_RPM_READLEVEL)
@@ -231,22 +220,12 @@ void loop()
   }
   pixels->show();
 
-#else
-  RainbowCycle(pixels, &mRainbowIndex);
-  Serial.print(mRainbowIndex);
-#endif
-
-
-#ifdef FAN_ENABLED
   Serial.print(fanSpeedPercent);
   Serial.print("%;");
   setFanSpeedPercent(fanSpeedPercent);
 
   Serial.print(actualFanSpeedRpm);
   Serial.println("RPM");
-#else
-  Serial.println("");
-#endif
 
   singleLed->fill(Color(0,128,128));
   singleLed->setBrightness(fanSpeedPercent);