diff --git a/mapgen.lua b/mapgen.lua
index 8b3aa6f..3ffbea7 100644
--- a/mapgen.lua
+++ b/mapgen.lua
@@ -511,7 +511,7 @@ function fun_caves.generate(p_minp, p_maxp, seed)
 	--minetest.generate_ores(vm, minp, maxp)
 	--minetest.generate_decorations(vm, minp, maxp)
 	--vm:set_param2_data(p2data)
-	vm:set_lighting({day = 15, night = 15})
+	vm:set_lighting({day = 0, night = 0})
 	vm:update_liquids()
 	vm:calc_lighting(minp, maxp, false)
 	vm:write_to_map()