diff --git a/Export/ExportManager.php b/Export/ExportManager.php
index 89e5a6599..d3ec7eabf 100644
--- a/Export/ExportManager.php
+++ b/Export/ExportManager.php
@@ -567,11 +567,15 @@ class ExportManager
      * get the formatter alias from the form export data
      * 
      * @param array $data the data from the export form
-     * @string the formatter alias
+     * @string the formatter alias|null
      */
     public function getFormatterAlias(array $data)
     {
-        return $data[ExportType::PICK_FORMATTER_KEY]['alias'];
+        if (array_key_exists(ExportType::PICK_FORMATTER_KEY, $data)) {
+           return $data[ExportType::PICK_FORMATTER_KEY]['alias'];
+        }
+
+        return null;
     }
     
     /**