diff --git a/core/lib/Drupal/Core/Entity/EntityReferenceSelection/SelectionPluginBase.php b/core/lib/Drupal/Core/Entity/EntityReferenceSelection/SelectionPluginBase.php
index 01d1b43..dddddd6 100644
--- a/core/lib/Drupal/Core/Entity/EntityReferenceSelection/SelectionPluginBase.php
+++ b/core/lib/Drupal/Core/Entity/EntityReferenceSelection/SelectionPluginBase.php
@@ -81,7 +81,7 @@ public function setConfiguration(array $configuration) {
       throw new \InvalidArgumentException("{$this->getPluginDefinition()['class']}::defaultConfiguration() should not contain a 'handler_settings' key. All settings should be placed in the root level.");
     }
 
-    // Extract the backward compatibility level from passed configuration, if any.
+    // Extract the BC level from passed configuration, if any.
     $handler_settings = !empty($configuration['handler_settings']) ? $configuration['handler_settings'] : [];
     unset($configuration['handler_settings']);