diff --git a/src/common/zeroconf/connection_zeroconf.py b/src/common/zeroconf/connection_zeroconf.py
index b7728c45d..0a75712fd 100644
--- a/src/common/zeroconf/connection_zeroconf.py
+++ b/src/common/zeroconf/connection_zeroconf.py
@@ -66,8 +66,10 @@ class ConnectionZeroconf(ConnectionHandlersZeroconf):
 			self.gpg = GnuPG.GnuPG(gajim.config.get('use_gpg_agent'))
 		self.is_zeroconf = True
 		self.privacy_rules_supported = False
+		self.blocked_list = []
 		self.blocked_contacts = []
 		self.blocked_groups = []
+		self.blocked_all = False
 		self.status = ''
 		self.old_show = ''
 		self.priority = 0