diff --git a/django/bin/daily_cleanup.py b/django/bin/daily_cleanup.py
index 6eb5c17feb..667e0f16c6 100644
--- a/django/bin/daily_cleanup.py
+++ b/django/bin/daily_cleanup.py
@@ -1,16 +1,17 @@
-"Daily cleanup file"
+"""
+Daily cleanup job.
+
+Can be run as a cronjob to clean out old data from the database (only expired
+sessions at the moment).
+"""
 
 from django.db import backend, connection, transaction
 
-DOCUMENTATION_DIRECTORY = '/home/html/documentation/'
-
 def clean_up():
     # Clean up old database records
     cursor = connection.cursor()
     cursor.execute("DELETE FROM %s WHERE %s < NOW()" % \
-        (backend.quote_name('core_sessions'), backend.quote_name('expire_date')))
-    cursor.execute("DELETE FROM %s WHERE %s < NOW() - INTERVAL '1 week'" % \
-        (backend.quote_name('registration_challenges'), backend.quote_name('request_date')))
+        (backend.quote_name('django_session'), backend.quote_name('expire_date')))
     transaction.commit_unless_managed()
 
 if __name__ == "__main__":