diff --git a/Core/DefaultVideoFilter.cpp b/Core/DefaultVideoFilter.cpp
index 751d7538..f5e73f03 100644
--- a/Core/DefaultVideoFilter.cpp
+++ b/Core/DefaultVideoFilter.cpp
@@ -2,7 +2,6 @@
 #include "DefaultVideoFilter.h"
 #include "EmulationSettings.h"
 #include <math.h>
-#define M_PI  3.14159265358979323846264f
 #include <algorithm>
 #include "PPU.h"
 #include "DebugHud.h"
@@ -19,7 +18,7 @@ void DefaultVideoFilter::InitConversionMatrix(double hueShift, double saturation
 	_pictureSettings.Hue = hueShift;
 	_pictureSettings.Saturation = saturationShift;
 
-	double hue = hueShift * M_PI;
+	double hue = hueShift * 3.14159265358979323846264f;
 	double sat = saturationShift + 1;
 
 	double baseValues[6] = { 0.956f, 0.621f, -0.272f, -0.647f, -1.105f, 1.702f };
diff --git a/Core/UnRom512.h b/Core/UnRom512.h
index b342e9d6..e900c2fb 100644
--- a/Core/UnRom512.h
+++ b/Core/UnRom512.h
@@ -50,7 +50,7 @@ protected:
 		}
 	}
 
-	void StreamState(bool saving)
+	void StreamState(bool saving) override
 	{
 		BaseMapper::StreamState(saving);