diff --git a/Core/Libraries/Source/WWVegas/WWMath/matrix4.cpp b/Core/Libraries/Source/WWVegas/WWMath/matrix4.cpp
index 0b489a40c72..b346825c584 100644
--- a/Core/Libraries/Source/WWVegas/WWMath/matrix4.cpp
+++ b/Core/Libraries/Source/WWVegas/WWMath/matrix4.cpp
@@ -46,6 +46,7 @@
 #include "WWLib/win.h"
 #include <d3d8types.h>
 #include <d3dx8math.h>
+#include <string.h>
 
 /***********************************************************************************************
  * Matrix4x4::Multiply -- Multiply two Matrix4x4's together                                        *
@@ -180,18 +181,10 @@ void Matrix4x4::Multiply(const Matrix4x4 & a,const Matrix3D & b,Matrix4x4 * res)
 	#undef ROWCOL4
 }
 
+// Compares the bits of the elements, so 0.0f and -0.0f differ and identical NaNs are equal.
 int operator == (const Matrix4x4 & a, const Matrix4x4 & b)
 {
-	unsigned* m1=(unsigned*)&a;
-	unsigned* m2=(unsigned*)&b;
-	unsigned res=0;
-	for (int i=0;i<4;++i) {
-		res|=*m1++^*m2++;
-		res|=*m1++^*m2++;
-		res|=*m1++^*m2++;
-		res|=*m1++^*m2++;
-	}
-	return !res;
+	return memcmp(&a, &b, sizeof(Matrix4x4)) == 0;
 }
 
 int operator != (const Matrix4x4 & a, const Matrix4x4 & b)