diff --git a/bg.lua b/bg.lua
index fe3feef..3fe3ba1 100644
--- a/bg.lua
+++ b/bg.lua
@@ -6,7 +6,7 @@ function draw_animated_bg(startx)
 	local color = 1
 	-- vertical lines
 	local t = t()+10
-	for i=startx-1,127,11 do
+	for i=startx-1,127,9 do
 		local a=sin(i*t/512)*amplitude+64
 		local b=cos(i*t/256)*amplitude+64
 		line(
@@ -18,7 +18,7 @@ function draw_animated_bg(startx)
 	end
 
 	-- horizontal lines
-	for i=startx-1,127,11 do
+	for i=startx-1,127,9 do
 		local a=sin(i*t/512)*amplitude+64
 		local b=cos(i*t/256)*amplitude+64
 		line(