diff --git a/www/class/centreonPurgeEngine.class.php b/www/class/centreonPurgeEngine.class.php
index 081025ca2ff9b9d6196d5b45ece164ab323b84e5..3cfaecc5f339ad218cbf60f35fd72618da750ffb 100644
--- a/www/class/centreonPurgeEngine.class.php
+++ b/www/class/centreonPurgeEngine.class.php
@@ -179,7 +179,7 @@ class CentreonPurgeEngine
         $request .= "AND CONVERT(PARTITION_DESCRIPTION, SIGNED INTEGER) IS NOT NULL ";
         $request .= "AND CONVERT(PARTITION_DESCRIPTION, SIGNED INTEGER) < " .
             $this->tablesToPurge[$table]['retention'] . " ";
-        $request .= "AND CONVERT(PARTITION_DESCRIPTION, SIGNED INTEGER) NOT LIKE 'pmax' ";
+        $request .= "AND PARTITION_NAME NOT LIKE 'pmax' ";
 
         try {
             $DBRESULT = $this->dbCentstorage->query($request);