diff --git a/CommandStation-EX.ino b/CommandStation-EX.ino
index 6b0ea71..77e8f40 100644
--- a/CommandStation-EX.ino
+++ b/CommandStation-EX.ino
@@ -69,8 +69,6 @@
 void setup()
 {
   // The main sketch has responsibilities during setup()
-  pinMode(LED_BUILTIN, OUTPUT);
-  digitalWrite(LED_BUILTIN, LOW);
 
   // Responsibility 1: Start the usb connection for diagnostics
   // This is normally Serial but uses SerialUSB on a SAMD processor
diff --git a/DCCWaveform.cpp b/DCCWaveform.cpp
index 3479921..53cab96 100644
--- a/DCCWaveform.cpp
+++ b/DCCWaveform.cpp
@@ -71,10 +71,7 @@ void DCCWaveform::loop() {
 
 #pragma GCC push_options
 #pragma GCC optimize ("-O3")
-static uint32_t blinker = 0;
 void DCCWaveform::interruptHandler() {
-  if (!(blinker++ % 25000))
-    digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
   // call the timer edge sensitive actions for progtrack and maintrack
   // member functions would be cleaner but have more overhead
   byte sigMain=signalTransform[mainTrack.state];