diff --git a/Core/MMC3_208.h b/Core/MMC3_208.h
index 7f47d7a8..57784adc 100644
--- a/Core/MMC3_208.h
+++ b/Core/MMC3_208.h
@@ -49,12 +49,12 @@ protected:
 		Stream(exRegs);
 	}
 
-	void UpdatePrgMapping()
+	void UpdatePrgMapping() override
 	{
 		SelectPrgPage4x(0, _exRegs[5] << 2);
 	}
 
-	uint8_t ReadRegister(uint16_t addr)
+	uint8_t ReadRegister(uint16_t addr) override
 	{
 		return _exRegs[addr & 0x03];
 	}
diff --git a/Core/Mapper116.h b/Core/Mapper116.h
index 02db8d27..70d93b7c 100644
--- a/Core/Mapper116.h
+++ b/Core/Mapper116.h
@@ -98,7 +98,6 @@ protected:
 		if((_mode & 0x03) == 1) {
 			switch(_a12Watcher.UpdateVramAddress(addr)) {
 				case A12StateChange::Rise:
-					uint32_t count = _irqCounter;
 					if(_irqCounter == 0 || _irqReload) {
 						_irqCounter = _irqReloadValue;
 					} else {
diff --git a/Core/SoundMixer.cpp b/Core/SoundMixer.cpp
index c4a0a788..fad08c9a 100644
--- a/Core/SoundMixer.cpp
+++ b/Core/SoundMixer.cpp
@@ -204,7 +204,7 @@ void SoundMixer::UpdateRates(bool forceUpdate)
 	AudioStatistics stats = GetStatistics();
 	int32_t requestedLatency = (int32_t)EmulationSettings::GetAudioLatency();
 	double targetRate = _sampleRate;
-	if(stats.AverageLatency > 0 && EmulationSettings::GetEmulationSpeed(100)) {
+	if(stats.AverageLatency > 0 && EmulationSettings::GetEmulationSpeed() == 100) {
 		if(stats.AverageLatency > requestedLatency + 2) {
 			targetRate *= 1.005;
 		} else if(stats.AverageLatency < requestedLatency - 2) {