diff --git a/Main.py b/Main.py
index d375b24b..64c83655 100644
--- a/Main.py
+++ b/Main.py
@@ -187,6 +187,7 @@ def main(args, seed=None, fish=None):
         link_overworld(world, player)
         create_shops(world, player)
         update_world_regions(world, player)
+        mark_light_dark_world_regions(world, player)
         create_flute_exits(world, player)
 
     logger.info(world.fish.translate("cli","cli","shuffling.world"))