diff --git a/frontends/src/quick_frontend/quick_chat.py b/frontends/src/quick_frontend/quick_chat.py
index 4579dd44..e70a0a13 100644
--- a/frontends/src/quick_frontend/quick_chat.py
+++ b/frontends/src/quick_frontend/quick_chat.py
@@ -29,7 +29,7 @@ try:
     # FIXME: to be removed when an acceptable solution is here
     unicode('') # XXX: unicode doesn't exist in pyjamas
 except (TypeError, AttributeError): # Error raised is not the same depending on pyjsbuild options
-    unicode = lambda x: str(x)
+    unicode = str
 
 
 class QuickChat(quick_widgets.QuickWidget):
diff --git a/frontends/src/quick_frontend/quick_contact_list.py b/frontends/src/quick_frontend/quick_contact_list.py
index ebf221b6..947fb9b4 100644
--- a/frontends/src/quick_frontend/quick_contact_list.py
+++ b/frontends/src/quick_frontend/quick_contact_list.py
@@ -134,17 +134,18 @@ class QuickContactList(QuickWidget):
                 result.setdefault(entity, set()).add(group)
         return result
 
+    def _gotContacts(self, contacts):
+        for contact in contacts:
+            self.host.newContactHandler(*contact, profile=self.profile)
+
     def fill(self):
         """Get all contacts from backend, and fill the widget
 
         Contacts will be cleared before refilling them
         """
         self.clearContacts(keep_cache=True)
-        def gotContacts(contacts):
-            for contact in contacts:
-                self.host.newContactHandler(*contact, profile=self.profile)
 
-        self.host.bridge.getContacts(self.profile, callback=gotContacts)
+        self.host.bridge.getContacts(self.profile, callback=self._gotContacts)
 
     def update(self):
         """Update the display when something changed"""