diff --git a/classes/Modules/SubscriptionCycle/Bootstrap.php b/classes/Modules/SubscriptionCycle/Bootstrap.php
index a27c4664..9e1cd737 100644
--- a/classes/Modules/SubscriptionCycle/Bootstrap.php
+++ b/classes/Modules/SubscriptionCycle/Bootstrap.php
@@ -1,4 +1,10 @@
 <?php
+/*
+ * SPDX-FileCopyrightText: 2022 Andreas Palm
+ * SPDX-FileCopyrightText: 2019 Xentral ERP Sorftware GmbH, Fuggerstrasse 11, D-86150 Augsburg
+ * SPDX-License-Identifier: LicenseRef-EGPL-3.1
+ */
+
 
 declare(strict_types=1);
 
diff --git a/classes/Modules/SubscriptionCycle/Scheduler/SubscriptionCycleManualJobTask.php b/classes/Modules/SubscriptionCycle/Scheduler/SubscriptionCycleManualJobTask.php
index d032099d..89064062 100644
--- a/classes/Modules/SubscriptionCycle/Scheduler/SubscriptionCycleManualJobTask.php
+++ b/classes/Modules/SubscriptionCycle/Scheduler/SubscriptionCycleManualJobTask.php
@@ -1,4 +1,9 @@
 <?php
+/*
+ * SPDX-FileCopyrightText: 2022 Andreas Palm
+ * SPDX-FileCopyrightText: 2019 Xentral ERP Sorftware GmbH, Fuggerstrasse 11, D-86150 Augsburg
+ * SPDX-License-Identifier: LicenseRef-EGPL-3.1
+ */
 
 declare(strict_types=1);
 
diff --git a/classes/Modules/SubscriptionCycle/Service/SubscriptionCycleJobService.php b/classes/Modules/SubscriptionCycle/Service/SubscriptionCycleJobService.php
index 5d5c106b..a115c768 100644
--- a/classes/Modules/SubscriptionCycle/Service/SubscriptionCycleJobService.php
+++ b/classes/Modules/SubscriptionCycle/Service/SubscriptionCycleJobService.php
@@ -1,4 +1,9 @@
 <?php
+/*
+ * SPDX-FileCopyrightText: 2022 Andreas Palm
+ * SPDX-FileCopyrightText: 2019 Xentral ERP Sorftware GmbH, Fuggerstrasse 11, D-86150 Augsburg
+ * SPDX-License-Identifier: LicenseRef-EGPL-3.1
+ */
 
 declare(strict_types=1);
 
diff --git a/classes/Modules/SubscriptionCycle/SubscriptionModule.php b/classes/Modules/SubscriptionCycle/SubscriptionModule.php
index 8b6ecead..ef31098a 100644
--- a/classes/Modules/SubscriptionCycle/SubscriptionModule.php
+++ b/classes/Modules/SubscriptionCycle/SubscriptionModule.php
@@ -1,4 +1,8 @@
 <?php
+/*
+ * SPDX-FileCopyrightText: 2022 Andreas Palm
+ * SPDX-License-Identifier: LicenseRef-EGPL-3.1
+ */
 
 namespace Xentral\Modules\SubscriptionCycle;
 
diff --git a/classes/Modules/SubscriptionCycle/SubscriptionModuleInterface.php b/classes/Modules/SubscriptionCycle/SubscriptionModuleInterface.php
index dea66b6c..23ccf7f6 100644
--- a/classes/Modules/SubscriptionCycle/SubscriptionModuleInterface.php
+++ b/classes/Modules/SubscriptionCycle/SubscriptionModuleInterface.php
@@ -1,6 +1,8 @@
 <?php
-
-declare(strict_types=1);
+/*
+ * SPDX-FileCopyrightText: 2022 Andreas Palm
+ * SPDX-License-Identifier: LicenseRef-EGPL-3.1
+ */
 
 namespace Xentral\Modules\SubscriptionCycle;
 
diff --git a/www/pages/content/rechnungslauf_abos.tpl b/www/pages/content/rechnungslauf_abos.tpl
index 5a0a1bc9..e7f1363a 100644
--- a/www/pages/content/rechnungslauf_abos.tpl
+++ b/www/pages/content/rechnungslauf_abos.tpl
@@ -1,3 +1,7 @@
+<!--
+SPDX-FileCopyrightText: 2022 Andreas Palm
+SPDX-License-Identifier: LicenseRef-EGPL-3.1
+-->
 <div id="tabs">
     <ul>
         <li></li>
diff --git a/www/pages/content/rechnungslauf_list.tpl b/www/pages/content/rechnungslauf_list.tpl
index 5df2b76a..c0a0f53e 100644
--- a/www/pages/content/rechnungslauf_list.tpl
+++ b/www/pages/content/rechnungslauf_list.tpl
@@ -1,3 +1,7 @@
+<!--
+SPDX-FileCopyrightText: 2022 Andreas Palm
+SPDX-License-Identifier: LicenseRef-EGPL-3.1
+-->
 <div id="tabs">
     <ul>
         <li><a href="#tabs-1">Rechnungen</a></li>
diff --git a/www/pages/content/rechnungslauf_minidetail.tpl b/www/pages/content/rechnungslauf_minidetail.tpl
index 588464dc..7a745af8 100644
--- a/www/pages/content/rechnungslauf_minidetail.tpl
+++ b/www/pages/content/rechnungslauf_minidetail.tpl
@@ -1,3 +1,8 @@
+<!--
+SPDX-FileCopyrightText: 2022 Andreas Palm
+SPDX-FileCopyrightText: 2019 Xentral ERP Sorftware GmbH, Fuggerstrasse 11, D-86150 Augsburg
+SPDX-License-Identifier: LicenseRef-EGPL-3.1
+-->
 <fieldset>
 	<legend>[SUBHEADING]</legend>
 
diff --git a/www/pages/rechnungslauf.php b/www/pages/rechnungslauf.php
index 3fe7ffdd..fa050d00 100644
--- a/www/pages/rechnungslauf.php
+++ b/www/pages/rechnungslauf.php
@@ -1,4 +1,8 @@
 <?php
+/*
+ * SPDX-FileCopyrightText: 2022 Andreas Palm
+ * SPDX-License-Identifier: LicenseRef-EGPL-3.1
+ */
 
 use Xentral\Modules\SubscriptionCycle\Service\SubscriptionCycleJobService;
 use Xentral\Modules\SubscriptionCycle\SubscriptionModule;