diff --git a/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php b/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php
index f28958d..3dd7144 100644
--- a/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php
+++ b/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php
@@ -217,7 +217,7 @@ public function __construct(array $configuration, $plugin_id, $plugin_definition
    * Initializes the iterator with the source data.
    *
    * @return \Iterator
-   *   Returns an array of data for this source.
+   *   Returns an iteratable object of data for this source.
    */
   abstract protected function initializeIterator();