diff --git a/RNBOTypes/Runtime/Cycling74.RNBOTypes.cs b/RNBOTypes/Runtime/Cycling74.RNBOTypes.cs
index 024c1ae..cf90782 100644
--- a/RNBOTypes/Runtime/Cycling74.RNBOTypes.cs
+++ b/RNBOTypes/Runtime/Cycling74.RNBOTypes.cs
@@ -178,7 +178,7 @@ public class PresetList {
         public List<PresetEntry> presets;
     }
 
-    public delegate void TransportRequestDelegate(IntPtr userData, MillisecondTime time, out bool running, out Float bpm, out Float beatTime, out int timeSigNum, out int timeSigDenom);
+    public delegate void TransportRequestDelegate(IntPtr userData, MillisecondTime time, out byte running, out Float bpm, out Float beatTime, out int timeSigNum, out int timeSigDenom);
 
     public class Transport {
 
@@ -243,13 +243,13 @@ public void SeekTo(Float beatTime) {
         (UInt16, UInt16) timeSignatureCur = (4, 4);
 
         [AOT.MonoPInvokeCallback(typeof(TransportRequestDelegate))]
-        public static void AudioThreadUpdate(IntPtr inst, MillisecondTime time, out bool run, out Float tempo, out Float beatTime, out int timeSigNum, out int timeSigDenom) {
+        public static void AudioThreadUpdate(IntPtr inst, MillisecondTime time, out byte run, out Float tempo, out Float beatTime, out int timeSigNum, out int timeSigDenom) {
             GCHandle gch = GCHandle.FromIntPtr(inst);
             Transport transport = (Transport)gch.Target;
             if (transport != null) {
                 transport.Update(time, out run, out tempo, out beatTime, out timeSigNum, out timeSigDenom);
             } else {
-                run = false;
+                run = 0; //false
                 tempo = 100.0;
                 beatTime = 0.0;
                 timeSigNum  = 4;
@@ -257,7 +257,7 @@ public static void AudioThreadUpdate(IntPtr inst, MillisecondTime time, out bool
             }
         }
         
-        internal void Update(MillisecondTime time, out bool run, out Float tempo, out Float beatTime, out int timeSigNum, out int timeSigDenom) {
+        internal void Update(MillisecondTime time, out byte run, out Float tempo, out Float beatTime, out int timeSigNum, out int timeSigDenom) {
             if (time != _lastUpdate) {
                 var last = _lastUpdate;
 
@@ -284,7 +284,7 @@ internal void Update(MillisecondTime time, out bool run, out Float tempo, out Fl
                 BeatTime = beatTimeCur;
             }
 
-            run = runningCur;
+            run = (byte)(runningCur ? 1 : 0);
             tempo = tempoCur;
             beatTime = beatTimeCur;
             timeSigNum = (int)timeSignatureCur.Item1;
diff --git a/src/RNBOWrapper.cpp b/src/RNBOWrapper.cpp
index 17b4dab..007b2fb 100644
--- a/src/RNBOWrapper.cpp
+++ b/src/RNBOWrapper.cpp
@@ -37,7 +37,7 @@ extern "C" {
 	typedef void (UNITY_AUDIODSP_CALLBACK * CBeatTimeEventCallback)(void * handle, RNBO::number, RNBO::MillisecondTime);
 	typedef void (UNITY_AUDIODSP_CALLBACK * CTimeSignatureEventCallback)(void * handle, int32_t, int32_t, RNBO::MillisecondTime);
 
-	typedef void (UNITY_AUDIODSP_CALLBACK * CTransportRequestCallback)(void * handle, RNBO::MillisecondTime time, bool* running, RNBO::number* bpm, RNBO::number* beatTime, int32_t *timeSigNum, int32_t *timeSigDenom);
+	typedef void (UNITY_AUDIODSP_CALLBACK * CTransportRequestCallback)(void * handle, RNBO::MillisecondTime time, uint8_t* running, RNBO::number* bpm, RNBO::number* beatTime, int32_t *timeSigNum, int32_t *timeSigDenom);
 	typedef void (UNITY_AUDIODSP_CALLBACK * CPresetCallback)(void * handle, const char * payload);
 }
 
@@ -296,14 +296,15 @@ namespace RNBOUnity
 					transport = globalTransport;
 
 				if (transport != nullptr) {
-					bool running = false;
 					RNBO::number bpm = 0.0, beatTime = 0.0;
 					int32_t timeSigNum = 4, timeSigDenom = 4;
 
+					uint8_t runningByte = 0;
 					transport->callback<CTransportRequestCallback>()(
 							transport->handle(),
-							now, &running, &bpm, &beatTime, &timeSigNum, &timeSigDenom);
+							now, &runningByte, &bpm, &beatTime, &timeSigNum, &timeSigDenom);
 
+					bool running = runningByte != 0;
 					if (running != mTransportRunning) {
 						mTransportRunning = running;