diff --git a/main.lua b/main.lua
index 5ba82fa..7b0a434 100644
--- a/main.lua
+++ b/main.lua
@@ -108,9 +108,9 @@ function love.draw()
   end
   local y = 0
   for line_index,line in ipairs(Lines) do
+    if y > Screen_height then break end
     if line_index >= Screen_top_line then
       y = math.floor(y+15*Zoom)
-      if y > Screen_height then break end
       Screen_bottom_line = line_index
       line.y = y
       if line.mode == 'text' and line.data == '' then