diff --git a/src/uxnemu.c b/src/uxnemu.c
index 9b0a85f..6f18188 100644
--- a/src/uxnemu.c
+++ b/src/uxnemu.c
@@ -187,6 +187,7 @@ quit(void)
 static int
 init(void)
 {
+	int i;
 	SDL_AudioSpec as;
 	SDL_zero(as);
 	as.freq = SAMPLE_FREQUENCY;
@@ -218,6 +219,9 @@ init(void)
 		return error("sdl_texture", SDL_GetError());
 	if(!(ppu_screen = malloc(ppu.width * ppu.height * sizeof(Uint32))))
 		return 0;
+	for(i = ppu.width + ppu.height + PAD * 4 - 1; i >= 0; --i)
+		ppu_screen[i] = 0;
+	SDL_UpdateTexture(gTexture, NULL, ppu_screen, sizeof(Uint32));
 	SDL_StartTextInput();
 	SDL_ShowCursor(SDL_DISABLE);
 	gRect.x = PAD;