diff --git a/worlds/adventure/__init__.py b/worlds/adventure/__init__.py
index 105725bd053c..9b9b0d77d800 100644
--- a/worlds/adventure/__init__.py
+++ b/worlds/adventure/__init__.py
@@ -271,7 +271,7 @@ def pre_fill(self):
         overworld_locations_copy = overworld.locations.copy()
         all_locations = self.multiworld.get_locations(self.player)
 
-        locations_copy = all_locations.copy()
+        locations_copy = list(all_locations)
         for loc in all_locations:
             if loc.item is not None or loc.progress_type != LocationProgressType.DEFAULT:
                 locations_copy.remove(loc)