diff --git a/019.hori_scroll/bin/hori_scroll.adf b/019.hori_scroll/bin/hori_scroll.adf
new file mode 100644
index 0000000..8635cb2
Binary files /dev/null and b/019.hori_scroll/bin/hori_scroll.adf differ
diff --git a/019.hori_scroll/hori_scroll.s b/019.hori_scroll/hori_scroll.s
index c44bed2..b079afe 100644
--- a/019.hori_scroll/hori_scroll.s
+++ b/019.hori_scroll/hori_scroll.s
@@ -60,7 +60,7 @@ UpdateHoriScrollPos:
 	bra	.done
 .switchToLeft:
 	move.l	#1,directionLeft
-	move.l	#SCREEN_WIDTH,hpos
+	move.l	#SCREEN_WIDTH-1,hpos
 	bra	.done
 .left:
 	sub.l	#1,hpos