diff --git a/Civi/DataProcessor/FieldOutputHandler/AbstractSimpleFieldOutputHandler.php b/Civi/DataProcessor/FieldOutputHandler/AbstractSimpleFieldOutputHandler.php
index 9c7aac3dca4a5b0df986aafb015c0194d6863618..a9f2bef82c4bf6396b7c42dae1396218fff4c30c 100644
--- a/Civi/DataProcessor/FieldOutputHandler/AbstractSimpleFieldOutputHandler.php
+++ b/Civi/DataProcessor/FieldOutputHandler/AbstractSimpleFieldOutputHandler.php
@@ -78,6 +78,7 @@ class AbstractSimpleFieldOutputHandler extends AbstractFieldOutputHandler implem
       )));
     }
     $this->inputFieldSpec = clone $this->inputFieldSpec;
+    $this->inputFieldSpec->alias = $alias;
     $this->dataSource->ensureFieldInSource($this->inputFieldSpec);
 
     $this->outputFieldSpec = clone $this->inputFieldSpec;