diff --git a/files/helpers/const.py b/files/helpers/const.py
index fa7ebdea7b..353e5b4900 100644
--- a/files/helpers/const.py
+++ b/files/helpers/const.py
@@ -854,7 +854,7 @@ NOTIF_MODACTION_JL_MIN = 2
 
 REDDIT_NOTIFS_JL_MIN = 1
 REDDIT_NOTIFS_SITE = {}
-REDDIT_NOTIFS_USERS = {}
+REDDIT_NOTIFS_USERS = set()
 
 if len(SITE_NAME) > 5:
 	REDDIT_NOTIFS_SITE.add(SITE_NAME.lower())