diff --git a/Civi/DataProcessor/FilterHandler/AbstractFieldFilterHandler.php b/Civi/DataProcessor/FilterHandler/AbstractFieldFilterHandler.php
index 8e118988695bec1fb5967d24a4076dc54b4777d2..b288830e1bccc81f3c71d4895375296eb04de365 100644
--- a/Civi/DataProcessor/FilterHandler/AbstractFieldFilterHandler.php
+++ b/Civi/DataProcessor/FilterHandler/AbstractFieldFilterHandler.php
@@ -9,6 +9,7 @@ namespace Civi\DataProcessor\FilterHandler;
 use Civi\DataProcessor\DataFlow\SqlDataFlow;
 use Civi\DataProcessor\Exception\DataSourceNotFoundException;
 use Civi\DataProcessor\Exception\FieldNotFoundException;
+use CRM_Dataprocessor_ExtensionUtil as E;
 
 abstract class AbstractFieldFilterHandler extends AbstractFilterHandler {