diff --git a/keypadOS.lua b/keypadOS.lua
index 257bc05..7676792 100644
--- a/keypadOS.lua
+++ b/keypadOS.lua
@@ -28,7 +28,7 @@ rawset(__BUNDLER_FILES, "updater.lua", function ()
                         fs.copy("startup.lua","backup.lua")
                         local startup_file = fs.open("startup.lua", "r")
                         local startup_contents = startup_file.readAll()
-                        file.close()
+                        startup_file.close()
                         if update_code_text ~= startup_contents then
                             local file = fs.open("startup.lua", "w")
                             file.write(update_code_text)