diff --git a/mods/default/mapgen.lua b/mods/default/mapgen.lua
index f0b2206..30c91c2 100644
--- a/mods/default/mapgen.lua
+++ b/mods/default/mapgen.lua
@@ -31,6 +31,7 @@ minetest.register_alias("mapgen_stone", "default:stone")
 minetest.register_alias("mapgen_desert_stone", "default:sandstone")
 minetest.register_alias("mapgen_desert_sand", "default:sand")
 minetest.register_alias("mapgen_sandstone", "default:sandstone")
+minetest.register_alias("mapgen_sandstonebrick", "default:compressed_sandstone")
 minetest.register_alias("mapgen_cobble", "default:cobble")
 minetest.register_alias("mapgen_gravel", "default:gravel")
 minetest.register_alias("mapgen_mossycobble", "default:cobble")
@@ -38,21 +39,17 @@ minetest.register_alias("mapgen_dirt", "default:dirt")
 minetest.register_alias("mapgen_dirt_with_grass", "default:dirt_with_grass")
 minetest.register_alias("mapgen_sand", "default:sand")
 minetest.register_alias("mapgen_snow", "air")
---minetest.register_alias("mapgen_snowblock", "default:dirt_with_dry_grass")
---minetest.register_alias("mapgen_dirt_with_snow", "default:dry_dirt")
-minetest.register_alias("mapgen_snowblock", "default:air")
+minetest.register_alias("mapgen_snowblock", "default:dirt_with_grass")
 minetest.register_alias("mapgen_dirt_with_snow", "default:dirt_with_grass")
 minetest.register_alias("mapgen_ice", "default:water_source")
 minetest.register_alias("mapgen_tree", "default:tree")
 minetest.register_alias("mapgen_leaves", "default:leaves")
 minetest.register_alias("mapgen_apple", "default:apple")
-minetest.register_alias("mapgen_jungletree", "default:tree_oak")
-minetest.register_alias("mapgen_jungleleaves", "default:leaves_oak")
+minetest.register_alias("mapgen_jungletree", "default:tree_birch")
+minetest.register_alias("mapgen_jungleleaves", "default:leaves_birch")
 minetest.register_alias("mapgen_junglegrass", "default:tall_grass")
-minetest.register_alias("mapgen_pine_tree", "default:tree_birch")
-minetest.register_alias("mapgen_pine_needles", "default:leaves_birch")
---minetest.register_alias("mapgen_pine_tree", "air")
---minetest.register_alias("mapgen_pine_needles", "air")
+minetest.register_alias("mapgen_pine_tree", "default:tree_oak")
+minetest.register_alias("mapgen_pine_needles", "default:leaves_oak")
 
 minetest.register_alias("mapgen_water_source", "default:water_source")
 minetest.register_alias("mapgen_river_water_source", "default:river_water_source")