diff --git a/Bosses.py b/Bosses.py
index 53393d5f..a42b5176 100644
--- a/Bosses.py
+++ b/Bosses.py
@@ -202,12 +202,14 @@ def place_bosses(world, player):
             place_boss(boss, level, loc, loc_text, world, player)
     elif world.boss_shuffle[player] == 'unique':
         bosses = list(placeable_bosses)
+        gt_bosses = list()
 
         for [loc, level] in boss_locations:
             loc_text = loc + (' ('+level+')' if level else '')
             try:
                 if level:
-                    boss = random.choice([b for b in placeable_bosses if can_place_boss(world, player, b, loc, level)])
+                    boss = random.choice([b for b in placeable_bosses if can_place_boss(world, player, b, loc, level) and b not in gt_bosses])
+                    gt_bosses.append(boss)
                 else:
                     boss = random.choice([b for b in bosses if can_place_boss(world, player, b, loc, level)])
                     bosses.remove(boss)