diff --git a/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj b/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
index f9dac9acd..0edc27528 100644
--- a/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj	
+++ b/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj	
@@ -784,16 +784,16 @@
 		4B55CE481C3B3B0C0093A61B /* Wrappers */ = {
 			isa = PBXGroup;
 			children = (
+				4B0EBFB61C487F2F00A11F35 /* AudioQueue.h */,
+				4B0EBFB71C487F2F00A11F35 /* AudioQueue.m */,
 				4B55CE491C3B3B0C0093A61B /* CSAtari2600.h */,
 				4B55CE4A1C3B3B0C0093A61B /* CSAtari2600.mm */,
+				4B55CE521C3B7ABF0093A61B /* CSElectron.h */,
+				4B55CE531C3B7ABF0093A61B /* CSElectron.mm */,
 				4B55CE4C1C3B3BDA0093A61B /* CSMachine.h */,
 				4B55CE4D1C3B3BDA0093A61B /* CSMachine.mm */,
 				4B55CE4F1C3B78A80093A61B /* CSMachine+Subclassing.h */,
-				4B55CE521C3B7ABF0093A61B /* CSElectron.h */,
-				4B55CE531C3B7ABF0093A61B /* CSElectron.mm */,
 				4BAE587D1C447B7A005B9AF0 /* KeyCodes.h */,
-				4B0EBFB61C487F2F00A11F35 /* AudioQueue.h */,
-				4B0EBFB71C487F2F00A11F35 /* AudioQueue.m */,
 			);
 			path = Wrappers;
 			sourceTree = "<group>";
diff --git a/OSBindings/Mac/Clock Signal/Wrappers/CSMachine+Subclassing.h b/OSBindings/Mac/Clock Signal/Wrappers/CSMachine+Subclassing.h
index 59f724bb2..20776b832 100644
--- a/OSBindings/Mac/Clock Signal/Wrappers/CSMachine+Subclassing.h	
+++ b/OSBindings/Mac/Clock Signal/Wrappers/CSMachine+Subclassing.h	
@@ -11,11 +11,7 @@
 
 @interface CSMachine (Subclassing)
 
-- (void)performAsync:(dispatch_block_t)action;
-- (void)performSync:(dispatch_block_t)action;
-
 - (CRTMachine::Machine * const)machine;
-
 - (void)setupOutputWithAspectRatio:(float)aspectRatio;
 
 @end
diff --git a/OSBindings/Mac/Clock Signal/Wrappers/CSMachine.mm b/OSBindings/Mac/Clock Signal/Wrappers/CSMachine.mm
index a52d68bec..eefdec3fd 100644
--- a/OSBindings/Mac/Clock Signal/Wrappers/CSMachine.mm	
+++ b/OSBindings/Mac/Clock Signal/Wrappers/CSMachine.mm	
@@ -22,23 +22,12 @@ struct SpeakerDelegate: public Outputs::Speaker::Delegate {
 
 @implementation CSMachine {
 	SpeakerDelegate _speakerDelegate;
-	dispatch_queue_t _serialDispatchQueue;
 }
 
 - (void)speaker:(Outputs::Speaker *)speaker didCompleteSamples:(const int16_t *)samples length:(int)length {
 	[self.audioQueue enqueueAudioBuffer:samples numberOfSamples:(unsigned int)length];
 }
 
-- (instancetype)init {
-	self = [super init];
-
-	if(self) {
-		_serialDispatchQueue = dispatch_queue_create("Machine queue", DISPATCH_QUEUE_SERIAL);
-	}
-
-	return self;
-}
-
 - (void)dealloc {
 	[_view performWithGLContext:^{
 		@synchronized(self) {
@@ -84,14 +73,6 @@ struct SpeakerDelegate: public Outputs::Speaker::Delegate {
 	}
 }
 
-- (void)performSync:(dispatch_block_t)action {
-	dispatch_sync(_serialDispatchQueue, action);
-}
-
-- (void)performAsync:(dispatch_block_t)action {
-	dispatch_async(_serialDispatchQueue, action);
-}
-
 - (void)setView:(CSOpenGLView *)view aspectRatio:(float)aspectRatio {
 	_view = view;
 	[view performWithGLContext:^{