diff --git a/classes/core_userkey_manager.php b/classes/core_userkey_manager.php
index 36e25db..d15ebc8 100644
--- a/classes/core_userkey_manager.php
+++ b/classes/core_userkey_manager.php
@@ -24,8 +24,6 @@
 
 namespace auth_userkey;
 
-defined('MOODLE_INTERNAL') || die;
-
 class core_userkey_manager implements userkey_manager_interface {
 
     /**
diff --git a/classes/privacy/provider.php b/classes/privacy/provider.php
index d969cfe..8ad305b 100644
--- a/classes/privacy/provider.php
+++ b/classes/privacy/provider.php
@@ -25,8 +25,6 @@
 
 namespace auth_userkey\privacy;
 
-defined('MOODLE_INTERNAL') || die;
-
 use core_privacy\local\metadata\null_provider;
 use core_privacy\local\legacy_polyfill;
 
diff --git a/classes/userkey_manager_interface.php b/classes/userkey_manager_interface.php
index 2afc481..3274df8 100644
--- a/classes/userkey_manager_interface.php
+++ b/classes/userkey_manager_interface.php
@@ -24,8 +24,6 @@
 
 namespace auth_userkey;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Interface userkey_manager_interface describes key manager behaviour.
  *
@@ -60,4 +58,4 @@ interface userkey_manager_interface {
      */
     public function validate_key($keyvalue);
 
-}
\ No newline at end of file
+}
diff --git a/db/upgrade.php b/db/upgrade.php
index 5400790..efb5a5b 100644
--- a/db/upgrade.php
+++ b/db/upgrade.php
@@ -22,8 +22,6 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-defined('MOODLE_INTERNAL') || die;
-
 function xmldb_auth_userkey_upgrade($oldversion) {
     global $DB;
 
diff --git a/login.php b/login.php
index 7956ff4..b6e7733 100644
--- a/login.php
+++ b/login.php
@@ -28,4 +28,4 @@ if (!is_enabled_auth('userkey')) {
     print_error(get_string('pluginisdisabled', 'auth_userkey'));
 }
 
-get_auth_plugin('userkey')->user_login_userkey();
\ No newline at end of file
+get_auth_plugin('userkey')->user_login_userkey();
diff --git a/logout.php b/logout.php
index 026f6ad..2e5cb0e 100644
--- a/logout.php
+++ b/logout.php
@@ -28,4 +28,4 @@ if (!is_enabled_auth('userkey')) {
     print_error(get_string('pluginisdisabled', 'auth_userkey'));
 }
 
-get_auth_plugin('userkey')->user_logout_userkey();
\ No newline at end of file
+get_auth_plugin('userkey')->user_logout_userkey();
diff --git a/tests/phpunit/auth_plugin_test.php b/tests/phpunit/auth_plugin_test.php
index 26a5dfc..647769b 100644
--- a/tests/phpunit/auth_plugin_test.php
+++ b/tests/phpunit/auth_plugin_test.php
@@ -22,8 +22,6 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Tests for auth_plugin_userkey class.
  *
diff --git a/tests/phpunit/core_userkey_manager_test.php b/tests/phpunit/core_userkey_manager_test.php
index abf9ad8..c95bd6b 100644
--- a/tests/phpunit/core_userkey_manager_test.php
+++ b/tests/phpunit/core_userkey_manager_test.php
@@ -22,8 +22,6 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-defined('MOODLE_INTERNAL') || die();
-
 use auth_userkey\core_userkey_manager;
 
 /**
diff --git a/tests/phpunit/externallib_test.php b/tests/phpunit/externallib_test.php
index f6a269c..5e29425 100644
--- a/tests/phpunit/externallib_test.php
+++ b/tests/phpunit/externallib_test.php
@@ -22,9 +22,6 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-defined('MOODLE_INTERNAL') || die();
-
-
 class auth_userkey_externallib_testcase extends advanced_testcase {
     /**
      * User object.
diff --git a/tests/phpunit/fake_userkey_manager.php b/tests/phpunit/fake_userkey_manager.php
index acae81a..3120be7 100644
--- a/tests/phpunit/fake_userkey_manager.php
+++ b/tests/phpunit/fake_userkey_manager.php
@@ -24,9 +24,6 @@
 
 namespace auth_userkey;
 
-defined('MOODLE_INTERNAL') || die();
-
-
 class fake_userkey_manager implements userkey_manager_interface {
 
     public function create_key($userid, $allowedips = null) {
@@ -40,4 +37,4 @@ class fake_userkey_manager implements userkey_manager_interface {
     public function validate_key($keyvalue) {
         // TODO: Implement validate_key() method.
     }
-}
\ No newline at end of file
+}
diff --git a/version.php b/version.php
index 9d5a850..e7777bb 100644
--- a/version.php
+++ b/version.php
@@ -29,4 +29,4 @@ $plugin->release   = 2022011600;        // Match release exactly to version.
 $plugin->requires  = 2017051500;        // Requires Moodle 3.3 version.
 $plugin->component = 'auth_userkey';    // Full name of the plugin (used for diagnostics).
 $plugin->maturity  = MATURITY_STABLE;
-$plugin->supported = [33, 311];         // A range of branch numbers of supported moodle versions.
\ No newline at end of file
+$plugin->supported = [33, 311];         // A range of branch numbers of supported moodle versions.