diff --git a/lib/invaders.lua.in b/lib/invaders.lua.in
index c9a2d8b8..9992659b 100644
--- a/lib/invaders.lua.in
+++ b/lib/invaders.lua.in
@@ -195,7 +195,7 @@ function enemies.setup()
     for y = 1, gamedata.enemies.rows do
         gamedata.enemies.data[y] = { }
         for x = 1, math.ceil((gamedata.enemies.count / gamedata.enemies.rows) + 1) do
-            gamedata.enemies.data[y][x] = enemies.new( math.random(1, 3) )
+            gamedata.enemies.data[y][x] = enemies.new((y % 3) + 1)
         end
     end