diff --git a/Civi/Core/ClassScanner.php b/Civi/Core/ClassScanner.php
index d1b352361603..e5ed6d67cdcb 100644
--- a/Civi/Core/ClassScanner.php
+++ b/Civi/Core/ClassScanner.php
@@ -111,9 +111,7 @@ private static function buildIndex(\CRM_Utils_Cache_Interface $cache): array {
    */
   private static function scanClasses(): array {
     $classes = static::scanCoreClasses();
-    if (\CRM_Utils_Constant::value('CIVICRM_UF') !== 'UnitTests') {
-      \CRM_Utils_Hook::scanClasses($classes);
-    }
+    \CRM_Utils_Hook::scanClasses($classes);
     return $classes;
   }