diff --git a/src/groupchat_window.py b/src/groupchat_window.py
index 981e4cb96..e53108595 100644
--- a/src/groupchat_window.py
+++ b/src/groupchat_window.py
@@ -576,7 +576,7 @@ class GroupchatWindow(chat.Chat):
 				_('You can manage your bookmarks via Actions menu in your roster.'))
 
 	def on_message_textview_key_press_event(self, widget, event):
-		if event.keyval not in [gtk.keysyms.ISO_Left_Tab, gtk.keysyms.Tab]:
+		if event.keyval not in (gtk.keysyms.ISO_Left_Tab, gtk.keysyms.Tab):
 			room_jid = self.get_active_jid()
 			self.last_key_tabs[room_jid] = False