diff --git a/plugins/gtkgui/roster_window.py b/plugins/gtkgui/roster_window.py
index 54a59a39f..340be327e 100644
--- a/plugins/gtkgui/roster_window.py
+++ b/plugins/gtkgui/roster_window.py
@@ -842,7 +842,7 @@ class roster_window:
 				self.plugin.windows[account]['gc']['tabbed']
 			self.plugin.windows[account]['gc']['tabbed'].window.present()
 		else:
-			self.plugin.windows[account]['gc'][user.jid] = \
+			self.plugin.windows[account]['gc'][jid] = \
 				Groupchat_window(jid, nick, self.plugin, account)
 
 	def on_message(self, jid, msg, tim, account):