diff --git a/frontends/src/wix/main_window.py b/frontends/src/wix/main_window.py
index d0630261..6409cb91 100644
--- a/frontends/src/wix/main_window.py
+++ b/frontends/src/wix/main_window.py
@@ -489,3 +489,11 @@ class MainWindow(wx.Frame, QuickApp):
             self.Raise()
         e.Skip()
 
+    def chatStateReceived(self, from_jid_s, state, profile):
+        """Signal observer to display a contact chat state
+        @param from_jid_s: contact who sent his new state
+        @state: state
+        @profile: current profile
+        """
+        print "TODO: chatStateReceived not implemented yet"
+        pass