diff --git a/examples/ReceiverActiveSensing/ReceiverActiveSensing.ino b/examples/ReceiverActiveSensing/ReceiverActiveSensing.ino
index e8bcde5..6d91822 100644
--- a/examples/ReceiverActiveSensing/ReceiverActiveSensing.ino
+++ b/examples/ReceiverActiveSensing/ReceiverActiveSensing.ino
@@ -22,9 +22,9 @@ struct MyMIDISettings : public MIDI_NAMESPACE::DefaultSettings
 
 MIDI_CREATE_CUSTOM_INSTANCE(HardwareSerial, Serial1, MIDI, MyMIDISettings);
 
-void errorHandler(int8_t err)
+void activeSensingTimeoutExceptionHandler(bool active)
 {
-  if (bitRead(err, ErrorActiveSensingTimeout))
+  if (!active)
   {
     MIDI.sendControlChange(AllSoundOff, 0, 1);
     MIDI.sendControlChange(AllNotesOff, 0, 1);
@@ -41,7 +41,7 @@ void setup()
   pinMode(LED_BUILTIN, OUTPUT);
   digitalWrite(LED_BUILTIN, LOW);
 
-  MIDI.setHandleError(errorHandler);
+  MIDI.setHandleActiveSensingTimeout(activeSensingTimeoutExceptionHandler);
   MIDI.begin(1);
 }
 
diff --git a/src/MIDI.h b/src/MIDI.h
index ffc7e16..a5bb5c7 100644
--- a/src/MIDI.h
+++ b/src/MIDI.h
@@ -185,6 +185,7 @@ public:
 public:
     inline void setHandleMessage(void (*fptr)(const MidiMessage&)) { mMessageCallback = fptr; };
     inline void setHandleError(ErrorCallback fptr) { mErrorCallback = fptr; }
+    inline void setHandleActiveSensingTimeout(ActiveSensingTimeoutCallback fptr) { mActiveSensingTimeoutCallback = fptr; }
     inline void setHandleNoteOff(NoteOffCallback fptr) { mNoteOffCallback = fptr; }
     inline void setHandleNoteOn(NoteOnCallback fptr) { mNoteOnCallback = fptr; }
     inline void setHandleAfterTouchPoly(AfterTouchPolyCallback fptr) { mAfterTouchPolyCallback = fptr; }
@@ -212,6 +213,7 @@ private:
 
     void (*mMessageCallback)(const MidiMessage& message) = nullptr;
     ErrorCallback mErrorCallback = nullptr;
+    ActiveSensingTimeoutCallback mActiveSensingTimeoutCallback = nullptr;
     NoteOffCallback mNoteOffCallback = nullptr;
     NoteOnCallback mNoteOnCallback = nullptr;
     AfterTouchPolyCallback mAfterTouchPolyCallback = nullptr;
diff --git a/src/MIDI.hpp b/src/MIDI.hpp
index 3b9e29b..1276060 100644
--- a/src/MIDI.hpp
+++ b/src/MIDI.hpp
@@ -723,24 +723,20 @@ inline bool MidiInterface<Transport, Settings, Platform>::read(Channel inChannel
             sendActiveSensing();
     }
 
+    // Once an Active Sensing message is received, the unit will begin monitoring 
+    // the intervalbetween all subsequent messages. If there is an interval of 420 ms 
+    // or longer betweenmessages while monitoring is active, the same processing 
+    // as when All Sound Off, All Notes Off,and Reset All Controllers messages are 
+    // received will be carried out. The unit will then stopmonitoring the message interval.
     if (Settings::UseReceiverActiveSensing && mReceiverActiveSensingActive)
     {
         if ((Platform::now() - mLastMessageReceivedTime > Settings::ReceiverActiveSensingTimeout))
         {
-            // Once an Active Sensing message is received, the unit will begin monitoring 
-            // the intervalbetween all subsequent messages. If there is an interval of 420 ms 
-            // or longer betweenmessages while monitoring is active, the same processing 
-            // as when All Sound Off, All Notes Off,and Reset All Controllers messages are 
-            // received will be carried out. The unit will then stopmonitoring the message interval.
             mReceiverActiveSensingActive = false;
 
-            // its up to the error handler to send the stop processing messages
+            // its up to the handler to send the stop processing messages
             // (also, no clue what the channel is on which to send them)
-
-            // no need to check if bit is already set, it is not (due to the mActiveSensingActive switch)
-            mLastError |= 1UL << ErrorActiveSensingTimeout; // set the ErrorActiveSensingTimeout bit
-            if (mErrorCallback)
-                mErrorCallback(mLastError);
+            mActiveSensingTimeoutCallback(true);
         }
     }
     #endif
@@ -759,17 +755,9 @@ inline bool MidiInterface<Transport, Settings, Platform>::read(Channel inChannel
 
         if  (mMessage.type == ActiveSensing && !mReceiverActiveSensingActive)
         {
-            // Once an Active Sensing message is received, the unit will begin monitoring 
-            // the intervalbetween all subsequent messages. If there is an interval of 420 ms 
-            // or longer betweenmessages while monitoring is active, the same processing 
-            // as when All Sound Off, All Notes Off,and Reset All Controllers messages are 
-            // received will be carried out. The unit will then stopmonitoring the message interval.
             mReceiverActiveSensingActive = true;
 
-            // Clear the ErrorActiveSensingTimeout bit
-            mLastError &= ~(1UL << ErrorActiveSensingTimeout); 
-            if (mErrorCallback)
-                mErrorCallback(mLastError);
+            mActiveSensingTimeoutCallback(false);
         }
     }
 
diff --git a/src/midi_Defs.h b/src/midi_Defs.h
index 623d97e..4ee9ec4 100644
--- a/src/midi_Defs.h
+++ b/src/midi_Defs.h
@@ -57,13 +57,13 @@ typedef byte FilterMode;
 // -----------------------------------------------------------------------------
 // Errors
 static const uint8_t ErrorParse = 0;
-static const uint8_t ErrorActiveSensingTimeout = 1;
 static const uint8_t WarningSplitSysEx = 2;
 
 // -----------------------------------------------------------------------------
 // Aliasing
 
 using ErrorCallback                = void (*)(int8_t);
+using ActiveSensingTimeoutCallback = void (*)(bool);
 using NoteOffCallback              = void (*)(Channel channel, byte note, byte velocity);
 using NoteOnCallback               = void (*)(Channel channel, byte note, byte velocity);
 using AfterTouchPolyCallback       = void (*)(Channel channel, byte note, byte velocity);