diff --git a/src/blitter/32bpp_anim_sse2.hpp b/src/blitter/32bpp_anim_sse2.hpp
--- a/src/blitter/32bpp_anim_sse2.hpp
+++ b/src/blitter/32bpp_anim_sse2.hpp
@@ -28,15 +28,15 @@
 /** A partially 32 bpp blitter with palette animation. */
 class Blitter_32bppSSE2_Anim : public Blitter_32bppAnim {
 public:
-	/* virtual */ void PaletteAnimate(const Palette &palette);
-	/* virtual */ const char *GetName() { return "32bpp-sse2-anim"; }
+	void PaletteAnimate(const Palette &palette) override;
+	const char *GetName() override { return "32bpp-sse2-anim"; }
 };
 
 /** Factory for the partially 32bpp blitter with animation. */
 class FBlitter_32bppSSE2_Anim : public BlitterFactory {
 public:
 	FBlitter_32bppSSE2_Anim() : BlitterFactory("32bpp-sse2-anim", "32bpp partially SSE2 Animation Blitter (palette animation)", HasCPUIDFlag(1, 3, 26)) {}
-	/* virtual */ Blitter *CreateInstance() { return new Blitter_32bppSSE2_Anim(); }
+	Blitter *CreateInstance() override { return new Blitter_32bppSSE2_Anim(); }
 };
 
 #endif /* WITH_SSE */