diff --git a/password_strength.routing.yml b/password_strength.routing.yml
index ae562c1..5eabf14 100644
--- a/password_strength.routing.yml
+++ b/password_strength.routing.yml
@@ -1,7 +1,7 @@
 password_strength.settings:
    path: '/admin/config/security/password_strength/settings'
    defaults:
-     _title: Password Strength settings
-     _form: Drupal\password_strength\Form\PasswordStrengthSettingsForm
+     _title: 'Password Strength settings'
+     _form: 'Drupal\password_strength\Form\PasswordStrengthSettingsForm'
    requirements:
      _permission: 'administer site configuration'