diff --git a/modules/monitoring/library/Monitoring/Backend/Ido/Query/ServicecommentdeletionhistoryQuery.php b/modules/monitoring/library/Monitoring/Backend/Ido/Query/ServicecommentdeletionhistoryQuery.php
index 69e49e1ea..1632b1a18 100644
--- a/modules/monitoring/library/Monitoring/Backend/Ido/Query/ServicecommentdeletionhistoryQuery.php
+++ b/modules/monitoring/library/Monitoring/Backend/Ido/Query/ServicecommentdeletionhistoryQuery.php
@@ -27,15 +27,15 @@ class ServicecommentdeletionhistoryQuery extends ServicecommenthistoryQuery
     {
         parent::joinBaseTables();
         $this->select->where("sch.deletion_time > '1970-01-02 00:00:00'");
-        $this->columnMap['history']['timestamp'] = str_replace(
+        $this->columnMap['commenthistory']['timestamp'] = str_replace(
             'comment_time',
             'deletion_time',
             $this->columnMap['history']['timestamp']
         );
-        $this->columnMap['history']['type'] = str_replace(
+        $this->columnMap['commenthistory']['type'] = str_replace(
             'END)',
             "END || '_deleted')",
-            $this->columnMap['history']['type']
+            $this->columnMap['commenthistory']['type']
         );
     }
 }