diff --git a/server.py b/server.py
index 0210b6a..b29e581 100644
--- a/server.py
+++ b/server.py
@@ -180,6 +180,7 @@ channel_modestore = {} # Channel: {nick: mode}
 channel_modestore_identify = {} # Channel: {account: mode}
 property_list = {"CatServ": {"host": server, "username": "system", "realname": "Updates bot (Internal)", "modes": "owi", "away": False, "external": False}} # Stores properties for active users and channels
 users_externalservers = {} # Nicknames that come from different servers, useful in netsplit situations
+cache_properties = {} # Cached property lists from other servers, used to send out changes
 for i in mods['command']:
     requires = {}
     for j in i.__ircat_requires__: