diff --git a/core/modules/user/src/UserInterface.php b/core/modules/user/src/UserInterface.php
index 64cbc19b9a..695e69b955 100644
--- a/core/modules/user/src/UserInterface.php
+++ b/core/modules/user/src/UserInterface.php
@@ -91,7 +91,7 @@ public function setUsername($username);
   /**
    * Returns the hashed password.
    *
-   * @return string
+   * @return string|null
    *   The hashed password.
    */
   public function getPassword();