diff --git a/pydle/client.py b/pydle/client.py
index 16a0705..92ffecf 100644
--- a/pydle/client.py
+++ b/pydle/client.py
@@ -272,10 +272,7 @@ class BasicClient:
             del self.users[nickname]
 
     def _format_hostmask(self, nickname):
-        if nickname not in self.users:
-            raise KeyError('Unknown user "{usr}".'.format(usr=nickname))
-
-        user = self.users[nickname]
+        user = self.users.get(nickname, {"username": "*", "hostname": "*"})
         return '{n}!{u}@{h}'.format(n=nickname, u=user['username'] or '*', h=user['hostname'] or '*')
 
 
@@ -914,6 +911,11 @@ class BasicClient:
         # MOTD is done, let's tell our bot the connection is ready.
         self.on_connect()
 
+    def on_raw_422(self, message):
+        """ MOTD is missing. """
+        self.motd = None
+        self.on_connect()
+
     def on_raw_421(self, message):
         """ Server responded with 'unknown command'. """
         self.logger.warn('Server responded with "Unknown command: {}"'.format(message.params[0]))
diff --git a/pydle/features/ircv3_1.py b/pydle/features/ircv3_1.py
index b73e712..43c0606 100644
--- a/pydle/features/ircv3_1.py
+++ b/pydle/features/ircv3_1.py
@@ -83,7 +83,7 @@ class IRCv3_1Support(sasl.SASLSupport, tls.TLSSupport):
             self._sync_user(nick, user, host)
 
             # Emit a fake join message.
-            fakemsg = self._construct_message('JOIN', channels, source=message.source)
+            fakemsg = self._create_message('JOIN', channels, source=message.source)
             super().on_raw_join(fakemsg)
 
             if account == NO_ACCOUNT: