diff --git a/mods/default/mapgen.lua b/mods/default/mapgen.lua
index 29208e8..206472d 100644
--- a/mods/default/mapgen.lua
+++ b/mods/default/mapgen.lua
@@ -5,25 +5,5 @@
 --
 
 minetest.register_alias("mapgen_stone", "default:stone")
-minetest.register_alias("mapgen_tree", "default:tree")
-minetest.register_alias("mapgen_leaves", "default:leaves")
-minetest.register_alias("mapgen_jungletree", "default:jungletree")
-minetest.register_alias("mapgen_jungleleaves", "default:jungleleaves")
-minetest.register_alias("mapgen_apple", "default:apple")
 minetest.register_alias("mapgen_water_source", "default:water_source")
 minetest.register_alias("mapgen_river_water_source", "default:water_source")
-minetest.register_alias("mapgen_dirt", "default:dirt")
-minetest.register_alias("mapgen_sand", "default:sand")
-minetest.register_alias("mapgen_gravel", "default:gravel")
-minetest.register_alias("mapgen_clay", "default:stone")
-minetest.register_alias("mapgen_lava_source", "default:lava_source")
-minetest.register_alias("mapgen_cobble", "default:cobble")
-minetest.register_alias("mapgen_mossycobble", "default:mossycobble")
-minetest.register_alias("mapgen_dirt_with_grass", "default:dirt_with_grass")
-minetest.register_alias("mapgen_junglegrass", "default:junglegrass")
-minetest.register_alias("mapgen_stone_with_coal", "default:stone_with_coal")
-minetest.register_alias("mapgen_stone_with_iron", "default:stone_with_iron")
-minetest.register_alias("mapgen_mese", "default:stone")
-minetest.register_alias("mapgen_desert_sand", "default:desert_sand")
-minetest.register_alias("mapgen_desert_stone", "default:desert_stone")
-minetest.register_alias("mapgen_stair_cobble", "stairs:stair_cobble")