diff --git a/src/common/zeroconf/connection_zeroconf.py b/src/common/zeroconf/connection_zeroconf.py
index 41fc8be9b..37c1469e4 100644
--- a/src/common/zeroconf/connection_zeroconf.py
+++ b/src/common/zeroconf/connection_zeroconf.py
@@ -102,6 +102,7 @@ class ConnectionZeroconf(ConnectionHandlersZeroconf):
 		self.muc_jid = {} # jid of muc server for each transport type
 		self.vcard_supported = False
 		self.private_storage_supported = False
+		self.archive_pref_supported = False
 
 	def get_config_values_or_default(self):
 		''' get name, host, port from config, or