diff --git a/data/plugins/lineguide.lua b/data/plugins/lineguide.lua
index 5a17c8ca..9f2fca4a 100644
--- a/data/plugins/lineguide.lua
+++ b/data/plugins/lineguide.lua
@@ -6,8 +6,7 @@ local DocView = require "core.docview"
 local draw_overlay = DocView.draw_overlay
 
 function DocView:draw_overlay(...)
-  local ns = ("n"):rep(config.line_limit)
-  local offset = self:get_font():get_width(ns)
+  local offset = self:get_font():get_width("n") * config.line_limit
   local x = self:get_line_screen_position(1) + offset
   local y = self.position.y
   local w = math.ceil(SCALE * 1)