diff --git a/frontends/src/quick_frontend/quick_contact_list.py b/frontends/src/quick_frontend/quick_contact_list.py
index 3f0c980d..7c7e27cd 100644
--- a/frontends/src/quick_frontend/quick_contact_list.py
+++ b/frontends/src/quick_frontend/quick_contact_list.py
@@ -501,7 +501,9 @@ class ProfileContactList(object):
             resource_data[C.PRESENCE_STATUSES] = statuses
 
             if entity.bare not in self._specials:
-                priority_resource = max(resources_data, key=lambda res: resources_data[res][C.PRESENCE_PRIORITY])
+                # we may have resources with no priority
+                # (when a cached value is added for a not connected resource)
+                priority_resource = max(resources_data, key=lambda res: resources_data[res].get(C.PRESENCE_PRIORITY, -2**32))
                 cache[C.CONTACT_MAIN_RESOURCE] = priority_resource
         self.update([entity], C.UPDATE_MODIFY, self.profile)