diff --git a/src/gl/renderer/gl_postprocess.cpp b/src/gl/renderer/gl_postprocess.cpp
index cea7cbb3f..7202ee2a9 100644
--- a/src/gl/renderer/gl_postprocess.cpp
+++ b/src/gl/renderer/gl_postprocess.cpp
@@ -938,7 +938,7 @@ int FGLRenderer::PTM_BestColor (const uint32_t *pal_in, int r, int g, int b, int
 	static bool firstTime = true;
 	static float trackpowtable = 0.;
 
-	double fbestdist, fdist;
+	double fbestdist = (double)(1<<53), fdist;
 	int bestcolor = 0;
 
 	if (firstTime || trackpowtable != gl_paltonemap_powtable)
diff --git a/src/vectors.h b/src/vectors.h
index 5fa0970f1..95d7c5fdf 100644
--- a/src/vectors.h
+++ b/src/vectors.h
@@ -651,6 +651,7 @@ struct TVector3
 	TVector3 &operator ^= (const TVector3 &other)
 	{
 		*this = *this ^ other;
+		return *this;
 	}
 };
 
diff --git a/src/win32/fb_d3d9.cpp b/src/win32/fb_d3d9.cpp
index d568ce60f..63722a371 100644
--- a/src/win32/fb_d3d9.cpp
+++ b/src/win32/fb_d3d9.cpp
@@ -1223,7 +1223,7 @@ void D3DFB::Flip()
 	{
 		RECT box;
 		GetClientRect(Window, &box);
-		if (box.right > 0 && box.right > 0 && (Width != box.right || Height != box.bottom))
+		if (box.right > 0 && (Width != box.right || Height != box.bottom))
 		{
 			Resize(box.right, box.bottom);