diff --git a/smart_sfinv_creative_bymod/init.lua b/smart_sfinv_creative_bymod/init.lua
index 5c9c1a8..26792ec 100644
--- a/smart_sfinv_creative_bymod/init.lua
+++ b/smart_sfinv_creative_bymod/init.lua
@@ -1,6 +1,8 @@
 
 local min_group_items = 8 --Todo: setting
 
+local mapping = dofile(minetest.get_modpath(minetest.get_current_modname())..'/mapping.lua')
+
 ------------------------------------------------------------------------
 -- Item groups collection
 ------------------------------------------------------------------------
@@ -22,13 +24,14 @@ end
 -- Get group assignment for item
 ------------------------------------------------------------------------
 local function get_group_assingment(def)
-	-- Order all stairs and slabs to the stairs group
-	if def.groups.stair or def.groups.slab then
-		return "stairs"
+	for group, _ in pairs(def.groups) do
+		if mapping.by_group[group] then
+			return mapping.by_group[group]
+		end
 	end
 
 	-- Group by mod origin by default
-	return def.mod_origin
+	return mapping.by_mod[def.mod_origin] or def.mod_origin
 end
 
 ------------------------------------------------------------------------
diff --git a/smart_sfinv_creative_bymod/mapping.lua b/smart_sfinv_creative_bymod/mapping.lua
new file mode 100644
index 0000000..6ea2a71
--- /dev/null
+++ b/smart_sfinv_creative_bymod/mapping.lua
@@ -0,0 +1,57 @@
+return {
+	by_mod = {
+		my_castle_doors = 'my_doors',
+		my_cottage_doors = 'my_doors',
+		my_default_doors = 'my_doors',
+		my_fancy_doors = 'my_doors',
+		my_future_doors = 'my_doors',
+		my_garage_door = 'my_doors',
+		my_hidden_doors = 'my_doors',
+		my_misc_doors = 'my_doors',
+		my_old_doors = 'my_doors',
+		my_saloon_doors = 'my_doors',
+		my_sliding_doors = 'my_doors',
+
+		mesecons_alias = 'mesecons',
+		mesecons_blinkyplant = 'mesecons',
+		mesecons_button = 'mesecons',
+		mesecons_commandblock = 'mesecons',
+		mesecons_delayer = 'mesecons',
+		mesecons_detector = 'mesecons',
+		mesecons_doors = 'mesecons',
+		mesecons_extrawires = 'mesecons',
+		mesecons_fpga = 'mesecons',
+		mesecons_gates = 'mesecons',
+		mesecons_hydroturbine = 'mesecons',
+		mesecons_insulated = 'mesecons',
+		mesecons_lamp = 'mesecons',
+		mesecons_lightstone = 'mesecons',
+		mesecons_luacontroller = 'mesecons',
+		mesecons_materials = 'mesecons',
+		mesecons_microcontroller = 'mesecons',
+		mesecons_movestones = 'mesecons',
+		mesecons_mvps = 'mesecons',
+		mesecons_noteblock = 'mesecons',
+		mesecons_pistons = 'mesecons',
+		mesecons_powerplant = 'mesecons',
+		mesecons_pressureplates = 'mesecons',
+		mesecons_random = 'mesecons',
+		mesecons_receiver = 'mesecons',
+		mesecons_solarpanel = 'mesecons',
+		mesecons_stickyblocks = 'mesecons',
+		mesecons_switch = 'mesecons',
+		mesecons_torch = 'mesecons',
+		mesecons_walllever = 'mesecons',
+		mesecons_wires = 'mesecons',
+
+		maidroid_core = 'maidroid',
+		maidroid_tool = 'maidroid',
+
+		shields = '3d_armor',
+	},
+	by_group = {
+		-- Order all stairs and slabs to the stairs group
+		stair = 'stairs',
+		slab = 'stairs',
+	}
+}