diff --git a/delete_file.lua b/delete_file.lua
index b71be7b..fab11ab 100644
--- a/delete_file.lua
+++ b/delete_file.lua
@@ -3,39 +3,39 @@ local utils = require "mp.utils"
 del_list = {}
 
 function contains_item(l, i)
-	for k, v in pairs(l) do
-		if v == i then
-			mp.osd_message("undeleting current file")
-			l[k] = nil
-			return true
-		end
-	end
-	mp.osd_message("deleting current file")
-	return false
+   for k, v in pairs(l) do
+      if v == i then
+         mp.osd_message("undeleting current file")
+         l[k] = nil
+         return true
+      end
+   end
+   mp.osd_message("deleting current file")
+   return false
 end
 
 function mark_delete()
-	local work_dir = mp.get_property_native("working-directory")
-	local file_path = mp.get_property_native("path")
-	local s = file_path:find(work_dir, 0, true)
-	local final_path
-	if s and s == 0 then
-		final_path = file_path
-	else
-		final_path = utils.join_path(work_dir, file_path)
-	end
-	if not contains_item(del_list, final_path) then
-		table.insert(del_list, final_path)
-	end
+   local work_dir = mp.get_property_native("working-directory")
+   local file_path = mp.get_property_native("path")
+   local s = file_path:find(work_dir, 0, true)
+   local final_path
+   if s and s == 0 then
+      final_path = file_path
+   else
+      final_path = utils.join_path(work_dir, file_path)
+   end
+   if not contains_item(del_list, final_path) then
+      table.insert(del_list, final_path)
+   end
 end
 
 function delete(e)
-	if e.reason == "quit" then
-		for i, v in pairs(del_list) do
-			print("deleting: "..v)
-			os.remove(v)
-		end
-	end
+   if e.reason == "quit" then
+      for i, v in pairs(del_list) do
+         print("deleting: "..v)
+         os.remove(v)
+      end
+   end
 end
 
 mp.add_key_binding("ctrl+DEL", "delete_file", mark_delete)