diff --git a/debian/alternc.cron.d b/debian/alternc.cron.d
index 7cd02c68..305c9aea 100644
--- a/debian/alternc.cron.d
+++ b/debian/alternc.cron.d
@@ -17,3 +17,8 @@
 
 # Once a week at 7am, optimise the AlternC database
 0 1 * * 7   alterncpanel  /usr/lib/alternc/alternc-dboptimize
+
+# We change the session directory... debian's patch modified :
+# Look for and purge old sessions every 30 minutes
+09,39 *     * * *     root   [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/alternc/sessions/ -type f -cmin +$(/usr/lib/php5/maxlifetime) -delete
+