diff --git a/airbrush.lua b/airbrush.lua
index ead27af..cc143a9 100644
--- a/airbrush.lua
+++ b/airbrush.lua
@@ -455,14 +455,13 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 				return
 			end
 		else
-			local s1 = string.sub(minetest.serialize(fields), 11)
-			local s3 = string.sub(s1,1, string.find(s1, '"')-1)
+			local color, _ = next(fields)
 
 			local inv = player:get_inventory()
 			local creative = minetest.is_creative_enabled(player_name)
-			local dye = "dye:"..s3
+			local dye = "dye:"..color
 
-			if (showall or unifieddyes.palette_has_color[nodepalette.."_"..s3]) and
+			if (showall or unifieddyes.palette_has_color[nodepalette.."_"..color]) and
 				(creative or inv:contains_item("main", dye)) then
 				unifieddyes.player_selected_dye[player_name] = dye
 				unifieddyes.show_airbrush_form(player)