diff --git a/worlds/messenger/subclasses.py b/worlds/messenger/subclasses.py
index 916d01b03ee8..b60aeb179feb 100644
--- a/worlds/messenger/subclasses.py
+++ b/worlds/messenger/subclasses.py
@@ -42,7 +42,7 @@ def __init__(self, name: str, world: "MessengerWorld", parent: Optional[str] = N
         loc_dict = {loc: world.location_name_to_id.get(loc, None) for loc in locations}
         self.add_locations(loc_dict, MessengerLocation)
 
-        world.regions.append(self)
+        self.multiworld.regions.append(self)
 
 
 class MessengerLocation(Location):
diff --git a/worlds/oot/Dungeon.py b/worlds/oot/Dungeon.py
index c190bde433b7..149b210fee19 100644
--- a/worlds/oot/Dungeon.py
+++ b/worlds/oot/Dungeon.py
@@ -11,7 +11,7 @@ def __init__(self, world, name, hint, font_color):
         self.small_keys = []
         self.dungeon_items = []
 
-        for region in world.regions.get_regions():
+        for region in world.regions:
             if region.dungeon == self.name:
                 region.dungeon = self
                 self.regions.append(region)
diff --git a/worlds/sc2/test/test_Regions.py b/worlds/sc2/test/test_Regions.py
index 286aba396fd8..c268b65da9a8 100644
--- a/worlds/sc2/test/test_Regions.py
+++ b/worlds/sc2/test/test_Regions.py
@@ -36,6 +36,6 @@ class TestGridGeneration(Sc2TestBase):
     }
 
     def test_size_matches_exclusions(self):
-        self.assertNotIn(MissionTables.SC2Mission.ZERO_HOUR.mission_name, self.world.regions)
+        self.assertNotIn(MissionTables.SC2Mission.ZERO_HOUR.mission_name, self.multiworld.regions)
         # WoL has 29 missions. -1 for Zero Hour being excluded, +1 for the automatically-added menu location
-        self.assertEqual(len(self.world.regions), 29)
+        self.assertEqual(len(self.multiworld.regions), 29)