diff --git a/DCCWaveform.cpp b/DCCWaveform.cpp
index 50aba8d..bdeacc4 100644
--- a/DCCWaveform.cpp
+++ b/DCCWaveform.cpp
@@ -3,8 +3,8 @@
 #include "DCCWaveform.h"
 #include "DIAG.h"
 
-DCCWaveform  DCCWaveform::mainTrack(PREAMBLE_BITS_MAIN, true, MAIN_MAX_MILLIAMPS* MAIN_SENSE_FACTOR);
-DCCWaveform  DCCWaveform::progTrack(PREAMBLE_BITS_PROG, false, 250 * PROG_SENSE_FACTOR);
+DCCWaveform  DCCWaveform::mainTrack(PREAMBLE_BITS_MAIN, true,  (int)(MAIN_MAX_MILLIAMPS / MAIN_SENSE_FACTOR));
+DCCWaveform  DCCWaveform::progTrack(PREAMBLE_BITS_PROG, false, (int)(PROG_MAX_MILLIAMPS / PROG_SENSE_FACTOR));
 
 const int ACK_MIN_PULSE_RAW=65 / PROG_SENSE_FACTOR;
 
@@ -94,8 +94,8 @@ void DCCWaveform::checkPowerOverload() {
       if (lastCurrent <= rawCurrentTripValue)  sampleDelay = POWER_SAMPLE_ON_WAIT;
       else {
         setPowerMode(POWERMODE::OVERLOAD);
-        int mA=Hardware::getCurrentMilliamps(isMainTrack,lastCurrent);
-        int maxmA=Hardware::getCurrentMilliamps(isMainTrack,rawCurrentTripValue);
+        unsigned int mA=Hardware::getCurrentMilliamps(isMainTrack,lastCurrent);
+        unsigned int maxmA=Hardware::getCurrentMilliamps(isMainTrack,rawCurrentTripValue);
         DIAG(F("\n*** %S TRACK POWER OVERLOAD current=%d max=%d ***\n"), isMainTrack ? F("MAIN") : F("PROG"), mA, maxmA);
         sampleDelay = POWER_SAMPLE_OVERLOAD_WAIT;
       }
diff --git a/Hardware.cpp b/Hardware.cpp
index f631846..532240e 100644
--- a/Hardware.cpp
+++ b/Hardware.cpp
@@ -47,7 +47,7 @@ int Hardware::getCurrentRaw(bool isMainTrack) {
  
 }
 
-int Hardware::getCurrentMilliamps(bool isMainTrack, int raw) {
+unsigned int Hardware::getCurrentMilliamps(bool isMainTrack, int raw) {
   return (int)(raw * (isMainTrack ? MAIN_SENSE_FACTOR : PROG_SENSE_FACTOR));
 }
 
diff --git a/Hardware.h b/Hardware.h
index dfb4845..9f8bd0e 100644
--- a/Hardware.h
+++ b/Hardware.h
@@ -6,7 +6,7 @@ class Hardware {
     static void init();
     static void setPower(bool isMainTrack, bool on);
     static void setSignal(bool isMainTrack, bool high);
-    static int  getCurrentMilliamps(bool isMainTrack, int rawValue);
+    static unsigned int  getCurrentMilliamps(bool isMainTrack, int rawValue);
     static int  getCurrentRaw(bool isMainTrack);
     static void setBrake(bool isMainTrack, bool on);
     static void setCallback(int duration,  void (*isr)());