diff --git a/modules/ppcp-settings/src/Endpoint/CommonRestEndpoint.php b/modules/ppcp-settings/src/Endpoint/CommonRestEndpoint.php
index f5ee5c39e..c7345148e 100644
--- a/modules/ppcp-settings/src/Endpoint/CommonRestEndpoint.php
+++ b/modules/ppcp-settings/src/Endpoint/CommonRestEndpoint.php
@@ -27,7 +27,7 @@ class CommonRestEndpoint extends RestEndpoint {
 	 *
 	 * @var string
 	 */
-	protected string $rest_base = 'common';
+	protected $rest_base = 'common';
 
 	/**
 	 * The settings instance.
diff --git a/modules/ppcp-settings/src/Endpoint/LoginLinkRestEndpoint.php b/modules/ppcp-settings/src/Endpoint/LoginLinkRestEndpoint.php
index ac05b0030..8ed204383 100644
--- a/modules/ppcp-settings/src/Endpoint/LoginLinkRestEndpoint.php
+++ b/modules/ppcp-settings/src/Endpoint/LoginLinkRestEndpoint.php
@@ -23,7 +23,7 @@ class LoginLinkRestEndpoint extends RestEndpoint {
 	 *
 	 * @var string
 	 */
-	protected string $rest_base = 'login_link';
+	protected $rest_base = 'login_link';
 
 	/**
 	 * Link generator list, with environment name as array key.