diff --git a/DCCTimerAVR.cpp b/DCCTimerAVR.cpp
index 66b51ba..5310704 100644
--- a/DCCTimerAVR.cpp
+++ b/DCCTimerAVR.cpp
@@ -75,6 +75,7 @@ void DCCTimer::startRailcomTimer(byte brakePin) {
        (there will be 7 DCC timer1 ticks in which to do this.)
     
     */
+  (void) brakePin; // Ignored... works on pin 9 only 
   const int cutoutDuration = 430; // Desired interval in microseconds
   
   // Set up Timer2 for CTC mode (Clear Timer on Compare Match)
diff --git a/DCCTimerMEGAAVR.cpp b/DCCTimerMEGAAVR.cpp
index 19eb409..be9337b 100644
--- a/DCCTimerMEGAAVR.cpp
+++ b/DCCTimerMEGAAVR.cpp
@@ -82,6 +82,7 @@ extern char *__malloc_heap_start;
 
 void DCCTimer::startRailcomTimer(byte brakePin) {
   // TODO: for intended operation see DCCTimerAVR.cpp
+  (void) brakePin; 
 }
 
 void DCCTimer::ackRailcomTimer() {
diff --git a/DCCTimerSAMD.cpp b/DCCTimerSAMD.cpp
index a0b4da5..d281371 100644
--- a/DCCTimerSAMD.cpp
+++ b/DCCTimerSAMD.cpp
@@ -78,6 +78,7 @@ void DCCTimer::begin(INTERRUPT_CALLBACK callback) {
 
 void DCCTimer::startRailcomTimer(byte brakePin) {
   // TODO: for intended operation see DCCTimerAVR.cpp
+  (void) brakePin; 
 }
 
 void DCCTimer::ackRailcomTimer() {
diff --git a/DCCTimerSTM32.cpp b/DCCTimerSTM32.cpp
index eb7e1ca..e22758f 100644
--- a/DCCTimerSTM32.cpp
+++ b/DCCTimerSTM32.cpp
@@ -203,6 +203,7 @@ void DCCTimer::begin(INTERRUPT_CALLBACK callback) {
 
 void DCCTimer::startRailcomTimer(byte brakePin) {
   // TODO: for intended operation see DCCTimerAVR.cpp
+  (void) brakePin; 
 }
 
 void DCCTimer::ackRailcomTimer() {
diff --git a/DCCTimerTEENSY.cpp b/DCCTimerTEENSY.cpp
index 1230180..d7bb29b 100644
--- a/DCCTimerTEENSY.cpp
+++ b/DCCTimerTEENSY.cpp
@@ -41,6 +41,7 @@ void DCCTimer::begin(INTERRUPT_CALLBACK callback) {
 
 void DCCTimer::startRailcomTimer(byte brakePin) {
   // TODO: for intended operation see DCCTimerAVR.cpp
+  (void) brakePin; 
 }
 
 void DCCTimer::ackRailcomTimer() {