diff --git a/demo.lua b/demo.lua
index 99f0092..b8860d5 100644
--- a/demo.lua
+++ b/demo.lua
@@ -1,7 +1,7 @@
-local cairo = require'cairo' --used to open the file
 local bitmap = require'bitmap' --used to read its content
 
 do --open image
+  local cairo = require'cairo' --used to open the file
   local image = cairo.load_png("/home/user/cle-usb-emulateurs.png")
   image_infos = {width = image:width(), height = image:height()}
   image_bitmap = image:bitmap()