diff --git a/init.lua b/init.lua
index 2d082f7..d0690de 100644
--- a/init.lua
+++ b/init.lua
@@ -2,7 +2,7 @@ local S
 if (minetest.get_modpath("intllib")) then
 	S = intllib.Getter()
 else
-	S = function ( s ) return s end
+	S = function(s,a,...)a={a,...}return s:gsub("@(%d+)",function(n)return a[tonumber(n)]end)end
 end
 
 local returnmirror = {}
@@ -64,7 +64,7 @@ if minetest.get_modpath("doc_items") then
 	usagehelp = S("Rightclick to set the mirror's teleport location. Leftclick to immediately teleport back to the mirror's teleport location.")
 	if minetest.get_modpath("mana") ~= nil then
 		longdesc = S("This item allows to teleport the user back to a previously set location, at the cost of mana.")
-		usagehelp = usagehelp .. " " .. string.format(S("Setting the teleport location costs %d mana, teleporting costs %d mana."), returnmirror.cost_set, returnmirror.cost_teleport)
+		usagehelp = usagehelp .. " " .. S("Setting the teleport location costs @1 mana, teleporting costs @2 mana.", returnmirror.cost_set, returnmirror.cost_teleport)
 	else
 		longdesc = S("This item allows to teleport its user back to a previously set location.")
 	end