diff --git a/mods/default/init.lua b/mods/default/init.lua
index 4d6fc871..0e2b259f 100644
--- a/mods/default/init.lua
+++ b/mods/default/init.lua
@@ -21,9 +21,9 @@ minetest.register_on_joinplayer(function(player)
 	local name = player:get_player_name()
 	local info = minetest.get_player_information(name)
 	if info.formspec_version > 1 then
-		formspec = formspec .. 'background9[5,5;1,1;gui_formbg.png;true;10]'
+		formspec = formspec .. "background9[5,5;1,1;gui_formbg.png;true;10]"
 	else
-		formspec = formspec .. 'background[5,5;1,1;gui_formbg.png;true]'
+		formspec = formspec .. "background[5,5;1,1;gui_formbg.png;true]"
 	end
 	player:set_formspec_prepend(formspec)
 end)