diff --git a/core/modules/migrate_drupal/config/install/migrate.migration.d6_user_picture_file.yml b/core/modules/migrate_drupal/config/install/migrate.migration.d6_user_picture_file.yml
index 1ed11aa..a2e13b9 100644
--- a/core/modules/migrate_drupal/config/install/migrate.migration.d6_user_picture_file.yml
+++ b/core/modules/migrate_drupal/config/install/migrate.migration.d6_user_picture_file.yml
@@ -8,6 +8,7 @@ source:
     is_public: true
 process:
   filename: filename
+  uid: uid
   uri:
     plugin: file_uri
     source: