diff --git a/Audio/Output/HeadphoneFilter.h b/Audio/Output/HeadphoneFilter.h
index c6f500b0d..ee1699161 100644
--- a/Audio/Output/HeadphoneFilter.h
+++ b/Audio/Output/HeadphoneFilter.h
@@ -15,10 +15,10 @@
 	vDSP_DFT_Setup dftSetupF;
 	vDSP_DFT_Setup dftSetupB;
 
-	size_t fftSize;
-	size_t fftSizeOver2;
-	size_t bufferSize;
-	size_t paddedBufferSize;
+	int fftSize;
+	int fftSizeOver2;
+	int bufferSize;
+	int paddedBufferSize;
 	int channelCount;
 
 	DSPSplitComplex signal_fft;
@@ -38,7 +38,7 @@
 
 - (id)initWithImpulseFile:(NSURL *)url forSampleRate:(double)sampleRate withInputChannels:(int)channels withConfig:(uint32_t)config;
 
-- (void)process:(const float *)inBuffer sampleCount:(size_t)count toBuffer:(float *)outBuffer;
+- (void)process:(const float *)inBuffer sampleCount:(int)count toBuffer:(float *)outBuffer;
 
 - (void)reset;
 
diff --git a/Audio/Output/HeadphoneFilter.mm b/Audio/Output/HeadphoneFilter.mm
index 17c79cc09..23efdafed 100644
--- a/Audio/Output/HeadphoneFilter.mm
+++ b/Audio/Output/HeadphoneFilter.mm
@@ -302,7 +302,7 @@ static impulseCache *_sharedController = nil;
 
 		paddedBufferSize = fftSize;
 		fftSizeOver2 = (fftSize + 1) / 2;
-		const size_t fftSizeOver2Plus1 = fftSizeOver2 + 1; // DFT float overwrites plus one, double doesn't
+		const int fftSizeOver2Plus1 = fftSizeOver2 + 1; // DFT float overwrites plus one, double doesn't
 
 		dftSetupF = vDSP_DFT_zrop_CreateSetup(nil, fftSize, vDSP_DFT_FORWARD);
 		dftSetupB = vDSP_DFT_zrop_CreateSetup(nil, fftSize, vDSP_DFT_INVERSE);