diff --git a/mod/lti/classes/local/ltiservice/service_base.php b/mod/lti/classes/local/ltiservice/service_base.php
index 3808e75364a..71e00c12961 100644
--- a/mod/lti/classes/local/ltiservice/service_base.php
+++ b/mod/lti/classes/local/ltiservice/service_base.php
@@ -62,7 +62,7 @@ abstract class service_base {
     private $toolproxy;
     /** @var stdClass LTI type object for the current service request. */
     private $type;
-    /** @var stdClass LTI type config object for the current service request. */
+    /** @var array LTI type config array for the current service request. */
     private $typeconfig;
     /** @var array Instances of the resources associated with this service. */
     protected $resources;
@@ -176,9 +176,9 @@ abstract class service_base {
     }
 
     /**
-     * Get the type config object.
+     * Get the type config array.
      *
-     * @return stdClass
+     * @return array|null
      */
     public function get_typeconfig() {
 
@@ -189,9 +189,9 @@ abstract class service_base {
     /**
      * Set the LTI type config object.
      *
-     * @param object $typeconfig The LTI type config for this service request
+     * @param array $typeconfig The LTI type config for this service request
      *
-     * @var stdClass
+     * @var array
      */
     public function set_typeconfig($typeconfig) {
 
diff --git a/mod/lti/service/memberships/classes/local/service/memberships.php b/mod/lti/service/memberships/classes/local/service/memberships.php
index 19819b4ab7a..6b9a9f5f62f 100644
--- a/mod/lti/service/memberships/classes/local/service/memberships.php
+++ b/mod/lti/service/memberships/classes/local/service/memberships.php
@@ -473,7 +473,7 @@ class memberships extends \mod_lti\local\ltiservice\service_base {
 
     /**
      * Determines whether a user attribute may be used as part of LTI membership
-     * @param object            $toolconfig      Tool config
+     * @param array             $toolconfig      Tool config
      * @param object            $instanceconfig  Tool instance config
      * @param array             $fields          Set of fields to return if allowed or not
      * @return array Verification which associates an attribute with a boolean (allowed or not)