diff --git a/Rules.py b/Rules.py
index a29ec51d..b42646ec 100644
--- a/Rules.py
+++ b/Rules.py
@@ -224,6 +224,7 @@ def global_rules(world, player):
     forbid_item(world.get_location('Thieves\' Town - Blind\'s Cell', player), 'Big Key (Thieves Town)', player)
     for location in ['Suspicious Maiden', 'Thieves\' Town - Blind\'s Cell']:
         set_rule(world.get_location(location, player), lambda state: state.has('Big Key (Thieves Town)', player))
+    set_rule(world.get_location('Thieves\' Town - Big Chest'), lambda state: state.has('Hammer', player))
     set_rule(world.get_location('Revealing Light', player), lambda state: state.has('Shining Light', player) and state.has('Maiden Rescued', player))
     set_rule(world.get_location('Thieves\' Town - Boss', player), lambda state: state.has('Maiden Unmasked', player) and world.get_location('Thieves\' Town - Boss', player).parent_region.dungeon.boss.can_defeat(state))
     set_rule(world.get_location('Thieves\' Town - Prize', player), lambda state: state.has('Maiden Unmasked', player) and world.get_location('Thieves\' Town - Prize', player).parent_region.dungeon.boss.can_defeat(state))