diff --git a/mod/quiz/report/overview/classes/privacy/provider.php b/mod/quiz/report/overview/classes/privacy/provider.php
index 0f9fee4eab4..2e01395137d 100644
--- a/mod/quiz/report/overview/classes/privacy/provider.php
+++ b/mod/quiz/report/overview/classes/privacy/provider.php
@@ -59,7 +59,7 @@ class provider implements
      * @param   int         $userid The userid of the user whose data is to be exported.
      */
     public static function export_user_preferences(int $userid) {
-        $preference = get_user_preferences('quiz_overview_slotmarks', null);
+        $preference = get_user_preferences('quiz_overview_slotmarks', null, $userid);
         if (null !== $preference) {
             if (empty($preference)) {
                 $description = get_string('privacy:preference:slotmarks:no', 'quiz_overview');
diff --git a/mod/quiz/report/overview/tests/privacy_provider_test.php b/mod/quiz/report/overview/tests/privacy_provider_test.php
index de59fcaa31f..299eb49b52a 100644
--- a/mod/quiz/report/overview/tests/privacy_provider_test.php
+++ b/mod/quiz/report/overview/tests/privacy_provider_test.php
@@ -55,14 +55,19 @@ class quiz_overview_privacy_provider_testcase extends \core_privacy\tests\provid
      * Preference does exist.
      */
     public function test_preference_yes() {
-        global $USER;
-
         $this->resetAfterTest();
+
+        // Create test user, add some preferences.
+        $user = $this->getDataGenerator()->create_user();
+        $this->setUser($user);
+
+        set_user_preference('quiz_overview_slotmarks', 1, $user);
+
+        // Switch to admin user (so we can validate preferences of the correct user are being exported).
         $this->setAdminUser();
 
-        set_user_preference('quiz_overview_slotmarks', 1);
-
-        provider::export_user_preferences($USER->id);
+        // Export test users preferences.
+        provider::export_user_preferences($user->id);
 
         $writer = writer::with_context(\context_system::instance());
         $this->assertTrue($writer->has_any_data());
@@ -78,14 +83,19 @@ class quiz_overview_privacy_provider_testcase extends \core_privacy\tests\provid
      * Preference does exist and is no.
      */
     public function test_preference_no() {
-        global $USER;
-
         $this->resetAfterTest();
-        $this->setAdminUser();
+
+        // Create test user, add some preferences.
+        $user = $this->getDataGenerator()->create_user();
+        $this->setUser($user);
 
         set_user_preference('quiz_overview_slotmarks', 0);
 
-        provider::export_user_preferences($USER->id);
+        // Switch to admin user (so we can validate preferences of the correct user are being exported).
+        $this->setAdminUser();
+
+        // Export test users preferences.
+        provider::export_user_preferences($user->id);
 
         $writer = writer::with_context(\context_system::instance());
         $this->assertTrue($writer->has_any_data());