diff --git a/mods/default/mapgen.lua b/mods/default/mapgen.lua
index 629c927..d4fa71e 100644
--- a/mods/default/mapgen.lua
+++ b/mods/default/mapgen.lua
@@ -21,7 +21,7 @@ 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:dry_dirt")
-minetest.register_alias("mapgen_junglegrass", "default:junglegrass")
+minetest.register_alias("mapgen_junglegrass", "air")
 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")