--- a/src/pyams_catalog/query.py	Wed Jul 22 16:49:58 2015 +0200
+++ b/src/pyams_catalog/query.py	Thu Oct 08 09:47:43 2015 +0200
@@ -33,6 +33,8 @@
     def __iter__(self):
         query = self.query
         intids = self.intids
+        if intids is None:
+            raise StopIteration
         if isinstance(query, Query):
             query = query.execute()
         if isinstance(query, tuple):