diff --git a/classes/AdminController.php b/classes/AdminController.php
index 3c568ba7f..48d36c176 100644
--- a/classes/AdminController.php
+++ b/classes/AdminController.php
@@ -835,6 +835,8 @@ class AdminControllerCore extends Controller
 
 		unset($_POST);
 		$this->_filter = false;
+		unset($this->_filterHaving);
+		unset($this->_having);
 	}
 
 	/**