diff --git a/src/groupchat_control.py b/src/groupchat_control.py
index 544048efb..9e7da7abd 100644
--- a/src/groupchat_control.py
+++ b/src/groupchat_control.py
@@ -593,7 +593,8 @@ class GroupchatControl(ChatControlBase):
 
         for nick in sorted(gajim.contacts.get_nick_list(self.account,
         self.room_jid)):
-            item = Gtk.MenuItem.new_with_label(nick, use_underline=False)
+            item = Gtk.MenuItem.new_with_label(nick)
+            item.set_use_underline(False)
             submenu.append(item)
             id_ = item.connect('activate', self.append_nick_in_msg_textview,
                 nick)