diff --git a/BaseClasses.py b/BaseClasses.py
index d91be28c..143b1f51 100644
--- a/BaseClasses.py
+++ b/BaseClasses.py
@@ -691,7 +691,7 @@ class CollectionState():
             locations = self.world.get_filled_locations()
         reachable_events = True
         # since the loop has a good chance to run more than once, only filter the events once
-        locations = {location for location in locations if location.event and
+        locations = {location for location in locations if location.event and location not in self.events and
                      not key_only or getattr(location.item, "locked_dungeon_item", False)}
         while reachable_events:
             reachable_events = {location for location in locations if location.can_reach(self)}