diff --git a/dta.zip b/dta.zip
index 94d05da2f2938ef029de29d6dc3a695b6d41c26e..ca317e9b8c769f8598b37c2b1c9451bbbb873b56 100644
Binary files a/dta.zip and b/dta.zip differ
diff --git a/dta/locallib.php b/dta/locallib.php
index 911dc3e415eedabb3a0a8e53b3403f7542722ceb..4c8d42d13fd3e3bcf19f33ea2a4ff44b359a4a44 100644
--- a/dta/locallib.php
+++ b/dta/locallib.php
@@ -18,9 +18,9 @@ defined('MOODLE_INTERNAL') || die();
 
 // Import various entity and application logic files.
 require_once($CFG->dirroot . '/mod/assign/submission/dta/models/DtaResult.php');
-require_once($CFG->dirroot . '/mod/assign/submission/dta/classes/database.php');
-require_once($CFG->dirroot . '/mod/assign/submission/dta/classes/backend.php');
-require_once($CFG->dirroot . '/mod/assign/submission/dta/classes/view.php');
+require_once($CFG->dirroot . '/mod/assign/submission/dta/utils/database.php');
+require_once($CFG->dirroot . '/mod/assign/submission/dta/utils/backend.php');
+require_once($CFG->dirroot . '/mod/assign/submission/dta/utils/view.php');
 
 use assignsubmission_dta\util\DtaBackendUtils;
 use assignsubmission_dta\util\DbUtils;
diff --git a/dta/classes/backend.php b/dta/utils/backend.php
similarity index 100%
rename from dta/classes/backend.php
rename to dta/utils/backend.php
diff --git a/dta/classes/database.php b/dta/utils/database.php
similarity index 100%
rename from dta/classes/database.php
rename to dta/utils/database.php
diff --git a/dta/classes/view.php b/dta/utils/view.php
similarity index 100%
rename from dta/classes/view.php
rename to dta/utils/view.php