diff --git a/src/mapgen_v6.lua b/src/mapgen_v6.lua
index 414fddc..9f9453e 100644
--- a/src/mapgen_v6.lua
+++ b/src/mapgen_v6.lua
@@ -106,7 +106,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	local plain = biome == 2 -- spawns not much
 	local alpine = biome == 3 -- rocky terrain
 	-- Water biomes
-	biome2 = pr:next(1, 5)
+	local biome2 = pr:next(1, 5)
 	local cool = biome == 1  -- only spawns ice on edge of water
 	local icebergs = biome == 2
 	local icesheet = biome == 3
diff --git a/src/nodes.lua b/src/nodes.lua
index cd6d02f..20c032b 100644
--- a/src/nodes.lua
+++ b/src/nodes.lua
@@ -66,7 +66,7 @@ end
 	
 	--Christmas easter egg
 	minetest.register_on_mapgen_init( function()
-		if skins then
+		if rawget(_G, "skins") then
 			skins.add("character_snow_man")
 		end
 	end
diff --git a/src/sled.lua b/src/sled.lua
index de20bac..0204658 100644
--- a/src/sled.lua
+++ b/src/sled.lua
@@ -68,7 +68,7 @@ local sled = {
 	visual = "mesh",
 	mesh = "sled.x",
 	textures = {"sled.png"},
-	HUD,
+	nil,
 	
 	driver = nil,
 	sliding = false,