diff --git a/lib/behat/classes/util.php b/lib/behat/classes/util.php
index 4941c5f0613..ae615de6b6b 100644
--- a/lib/behat/classes/util.php
+++ b/lib/behat/classes/util.php
@@ -414,6 +414,8 @@ class behat_util extends testing_util {
 
         filter_manager::reset_caches();
 
+        \core_reportbuilder\manager::reset_caches();
+
         // Reset course and module caches.
         core_courseformat\base::reset_course_cache(0);
         get_fast_modinfo(0, 0, true);
diff --git a/reportbuilder/classes/manager.php b/reportbuilder/classes/manager.php
index c46fe804272..680cb7b9abf 100644
--- a/reportbuilder/classes/manager.php
+++ b/reportbuilder/classes/manager.php
@@ -67,10 +67,10 @@ class manager {
     }
 
     /**
-     * Run reset code after unit tests to reset the instance cache
+     * Run reset code after tests to reset the instance cache
      */
     public static function reset_caches(): void {
-        if (PHPUNIT_TEST) {
+        if (PHPUNIT_TEST || defined('BEHAT_TEST')) {
             static::$instances = [];
         }
     }