diff --git a/worlds/alttp/Rules.py b/worlds/alttp/Rules.py
index 8a04f87afa02..98ab805b5c08 100644
--- a/worlds/alttp/Rules.py
+++ b/worlds/alttp/Rules.py
@@ -968,6 +968,9 @@ def standard_rules(world, player):
 
         set_rule(world.get_location('Sewers - Key Rat Key Drop', player),
                  lambda state: state._lttp_has_key('Small Key (Hyrule Castle)', player, 3))
+    else:
+        set_rule(world.get_location('Hyrule Castle - Zelda\'s Chest', player),
+                 lambda state: state.has('Big Key (Hyrule Castle)', player))
 
 def toss_junk_item(world, player):
     items = ['Rupees (20)', 'Bombs (3)', 'Arrows (10)', 'Rupees (5)', 'Rupee (1)', 'Bombs (10)',