diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/marstek/MarstekB2500DeviceCoordinator.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/marstek/MarstekB2500DeviceCoordinator.java
index 1b206de39..87177a7c2 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/marstek/MarstekB2500DeviceCoordinator.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/marstek/MarstekB2500DeviceCoordinator.java
@@ -1,3 +1,19 @@
+/*  Copyright (C) 2024 Andreas Shimokawa
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>. */
 package nodomain.freeyourgadget.gadgetbridge.devices.marstek;
 
 
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/marstek/MarstekB2500DeviceSupport.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/marstek/MarstekB2500DeviceSupport.java
index e2cffb175..ea6648c10 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/marstek/MarstekB2500DeviceSupport.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/marstek/MarstekB2500DeviceSupport.java
@@ -1,3 +1,19 @@
+/*  Copyright (C) 2024 Andreas Shimokawa
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>. */
 package nodomain.freeyourgadget.gadgetbridge.service.devices.marstek;
 
 import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_BATTERY_ALLOW_PASS_THOUGH;