diff --git a/core/lib/Drupal/Core/Password/PhpPassword.php b/core/lib/Drupal/Core/Password/PhpPassword.php
index f271d81..42623d8 100644
--- a/core/lib/Drupal/Core/Password/PhpPassword.php
+++ b/core/lib/Drupal/Core/Password/PhpPassword.php
@@ -91,7 +91,7 @@ public function userNeedsNewHash(UserInterface $account) {
     // The PHP 5.5 password_needs_rehash() will return TRUE in two cases:
     // - The password is a Drupal 6 or 7 password and it has been rehashed
     //   during the migration. In this case the rehashed legacy hash is prefixed
-    //   to indicate and old-Drupal hash and will not comply with the expected
+    //   to indicate an old Drupal hash and will not comply with the expected
     //   password_needs_rehash() format.
     // - The parameters of hashing engine were changed. For example the
     //   parameter 'password_hash_cost' (the hashing cost) has been increased in