diff --git a/src/core.py b/src/core.py
index ccf8262c..2e920508 100644
--- a/src/core.py
+++ b/src/core.py
@@ -2085,7 +2085,7 @@ class Core(object):
                 if tab.joined:
                     muc.leave_groupchat(tab.core.xmpp, tab.get_name(), tab.own_nick, message)
                 tab.joined = False
-                self.command_join('%s/%s' %(tab.get_name(), tab.own_nick))
+                self.command_join('"%s/%s"' %(tab.get_name(), tab.own_nick))
 
     def command_bind(self, arg):
         """