diff --git a/build.sh b/build.sh
index ba05efd..572c5a5 100755
--- a/build.sh
+++ b/build.sh
@@ -32,7 +32,7 @@ else
 fi
 
 echo "Assembling.."
-./bin/assembler projects/examples/gui.mouse.usm bin/boot.rom
+./bin/assembler projects/examples/dev.screen.usm bin/boot.rom
 
 echo "Running.."
 if [ "${2}" = '--cli' ]; 
diff --git a/src/ppu.c b/src/ppu.c
index 907447d..8f23479 100644
--- a/src/ppu.c
+++ b/src/ppu.c
@@ -130,7 +130,7 @@ putchr(Ppu *p, Uint8 *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color)
 		for(h = 0; h < 8; h++) {
 			Uint8 ch1 = ((sprite[v] >> (7 - h)) & 0x1) * color;
 			Uint8 ch2 = ((sprite[v + 8] >> (7 - h)) & 0x1) * color;
-			putpixel(p, layer, x + h, y + v, (((ch1 + ch2 * 2) + color - 1) & 0x3));
+			putpixel(p, layer, x + h, y + v, (((ch1 + ch2 * 2) + color / 4) & 0x3));
 		}
 }