diff --git a/src/Form/SettingsForm.php b/src/Form/SettingsForm.php
index 87eaf2b13e235f809b62ff0637e20643fda9e829..7c16d8531a73c025eb740aa15eb3ec1bd78d28ab 100644
--- a/src/Form/SettingsForm.php
+++ b/src/Form/SettingsForm.php
@@ -18,7 +18,7 @@ class SettingsForm extends ConfigFormBase {
    *
    * @var \Drupal\Core\Config\TypedConfigManagerInterface
    */
-  protected $typedConfigManager;
+  protected TypedConfigManagerInterface $typedConfigManager;
 
   /**
    * SettingsForm constructor.