diff --git a/fw/antorcha.c b/fw/antorcha.c
index 5b7d802..320ff5d 100644
--- a/fw/antorcha.c
+++ b/fw/antorcha.c
@@ -28,7 +28,7 @@ static struct sweep sweep = {
 	.wait_ticks	=	 60000,	/*  60 ms */
 	.pixel_ticks	=	  1000,	/*   1 ms */
 	.left		=	     0,
-	.right		=	    79,
+	.right		=   MAX_LINES-1,
 	.forward 	=	     1,
 };
 
diff --git a/fw/image.h b/fw/image.h
index dd4c4a4..5936186 100644
--- a/fw/image.h
+++ b/fw/image.h
@@ -18,7 +18,7 @@
 #include <stdint.h>
 
 
-#define	MAX_LINES	100
+#define	MAX_LINES	80
 
 
 struct line {