diff --git a/src/Plugin/MediaEntity/Type/Twitter.php b/src/Plugin/MediaEntity/Type/Twitter.php
index 1599387..8657d39 100644
--- a/src/Plugin/MediaEntity/Type/Twitter.php
+++ b/src/Plugin/MediaEntity/Type/Twitter.php
@@ -431,20 +431,27 @@ class Twitter extends MediaTypeBase {
    * {@inheritdoc}
    */
   public function getDefaultSourceField() {
-    if (!$storage = FieldStorageConfig ::loadByName('media', static::MEDIA_ENTITY_TWITTER_DEFAULT_FIELD_NAME)) {
-      $storage = FieldStorageConfig::create([
-        'field_name' => static::MEDIA_ENTITY_TWITTER_DEFAULT_FIELD_NAME,
-        'entity_type' => 'media',
-        'type' => 'string',
-      ]);
+    $return = [];
+    if (!empty($this->configuration['create_source_field'])) {
+      if (!$storage = FieldStorageConfig ::loadByName('media', static::MEDIA_ENTITY_TWITTER_DEFAULT_FIELD_NAME)) {
+        $storage = FieldStorageConfig::create([
+          'field_name' => static::MEDIA_ENTITY_TWITTER_DEFAULT_FIELD_NAME,
+          'entity_type' => 'media',
+          'type' => 'string',
+        ]);
+      }
+      $return = [
+        'source_field' => [
+          'storage' => $storage,
+          'field_name' => static::MEDIA_ENTITY_TWITTER_DEFAULT_FIELD_NAME,
+          'label' => $this->t('Tweet URL'),
+          'widget' => static::MEDIA_ENTITY_TWITTER_DEFAULT_FIELD_WIDGET,
+          'formatter' => static::MEDIA_ENTITY_TWITTER_DEFAULT_FIELD_FORMATTER,
+        ],
+      ];
     }
-    return [
-      'storage' => $storage,
-      'field_name' => static::MEDIA_ENTITY_TWITTER_DEFAULT_FIELD_NAME,
-      'label' => $this->t('Tweet URL'),
-      'field_widget' => static::MEDIA_ENTITY_TWITTER_DEFAULT_FIELD_WIDGET,
-      'field_formatter' => static::MEDIA_ENTITY_TWITTER_DEFAULT_FIELD_FORMATTER,
-    ];
+    return $return;
   }
 
+
 }