diff --git a/src/arch/MovieTexture/MovieTexture_Null.cpp b/src/arch/MovieTexture/MovieTexture_Null.cpp
index c7b22a6db6..58b5dd334e 100644
--- a/src/arch/MovieTexture/MovieTexture_Null.cpp
+++ b/src/arch/MovieTexture/MovieTexture_Null.cpp
@@ -54,7 +54,7 @@ MovieTexture_Null::MovieTexture_Null(RageTextureID ID) : RageMovieTexture(ID)
 	const RageDisplay::RagePixelFormatDesc *pfd = DISPLAY->GetPixelFormatDesc( pixfmt );
 	RageSurface *img = CreateSurface( size, size, pfd->bpp,
 		pfd->masks[0], pfd->masks[1], pfd->masks[2], pfd->masks[3] );
-	memset( img->pixels, 0, img->pitch*img->h );
+	memset( img->pixels, 0, static_cast<size_t>(img->pitch) * img->h );
 
 	texHandle = DISPLAY->CreateTexture( pixfmt, img, false );