diff --git a/core/lib/Drupal/Core/Session/SessionManager.php b/core/lib/Drupal/Core/Session/SessionManager.php
index fbd7cd8..0beeeda 100644
--- a/core/lib/Drupal/Core/Session/SessionManager.php
+++ b/core/lib/Drupal/Core/Session/SessionManager.php
@@ -356,7 +356,7 @@ protected function isSessionObsolete() {
   }
 
   /**
-   * Return a map specifying which session key is containing user data.
+   * Returns a map specifying which session key is containing user data.
    *
    * @return array
    *   An array where keys correspond to the session keys and the values are