diff -r c81cacab10af -r d9642be7c937 src/hdalab/management/commands/query_wikipedia_category.py
--- a/src/hdalab/management/commands/query_wikipedia_category.py	Fri Mar 20 01:16:43 2015 +0100
+++ b/src/hdalab/management/commands/query_wikipedia_category.py	Fri Mar 20 01:42:45 2015 +0100
@@ -381,7 +381,7 @@
             if tag.url_status == Tag.TAG_URL_STATUS_DICT['redirection'] and tag.alternative_wikipedia_pageid is not None :
                 wikipedia_pageid = tag.alternative_label if use_label else tag.alternative_wikipedia_pageid
 
-            with transaction.commit_on_success():
+            with transaction.atomic():
                 if types_mask & TYPES_MASK_DICT['visible']:
                     res = self.query_all_categories(False, site, wikipedia_pageid, use_label)
                     self.process_categories(res, False, tag)