diff --git a/application/qml/components/AboutLabel.qml b/application/qml/components/AboutLabel.qml
index f11a07a..76ffdd8 100644
--- a/application/qml/components/AboutLabel.qml
+++ b/application/qml/components/AboutLabel.qml
@@ -1,3 +1,20 @@
+/**
+ * Battery Buddy, a Sailfish application to prolong battery lifetime
+ *
+ * Copyright (C) 2019-2020 Matti Viljanen
+ *
+ * Battery Buddy is free software: you can redistribute it and/or modify it under the terms of the
+ * GNU General Public License as published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * Battery Buddy 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 General Public License for more details. You should have received a copy of the GNU
+ * General Public License along with Battery Buddy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Matti Viljanen
+ */
 import QtQuick 2.0
 import Sailfish.Silica 1.0
 
diff --git a/application/qml/components/MyDetailItem.qml b/application/qml/components/MyDetailItem.qml
index 4ee22e5..560f079 100644
--- a/application/qml/components/MyDetailItem.qml
+++ b/application/qml/components/MyDetailItem.qml
@@ -32,7 +32,7 @@
 **
 ****************************************************************************************/
 
-// Modified by Matti Viljanen: added text size control
+// Modified by Matti Viljanen 2020: added text size control
 
 import QtQuick 2.0
 import Sailfish.Silica 1.0
diff --git a/application/qml/components/MySlider.qml b/application/qml/components/MySlider.qml
index 76180c6..9cf51c2 100644
--- a/application/qml/components/MySlider.qml
+++ b/application/qml/components/MySlider.qml
@@ -32,6 +32,8 @@
 **
 ****************************************************************************************/
 
+// Modified by Matti Viljanen 2020: Added left-to-right/right-to-left support
+
 import QtQuick 2.4
 import Sailfish.Silica 1.0
 import Sailfish.Silica.private 1.0
@@ -43,7 +45,6 @@ SliderBase {
 
     readonly property real _glassItemPadding: Theme.paddingMedium
 
-    // Left-to-right/right-to-left support by Matti Viljanen aka direc85 2020
     property int highlightDirection: Qt.LeftToRight
 
     // compensate the existence of glow effect on light ambiences
diff --git a/application/src/battery.h b/application/src/battery.h
index f9a759c..d19f6de 100644
--- a/application/src/battery.h
+++ b/application/src/battery.h
@@ -1,7 +1,7 @@
 /**
  * Battery Buddy, a Sailfish application to prolong battery lifetime
  *
- * Copyright (C) 2019 Matti Viljanen
+ * Copyright (C) 2019-2020 Matti Viljanen
  *
  * Battery Buddy is free software: you can redistribute it and/or modify it under the terms of the
  * GNU General Public License as published by the Free Software Foundation, either version 3 of the
diff --git a/service/src/battery.h b/service/src/battery.h
index d3aef4a..702c247 100644
--- a/service/src/battery.h
+++ b/service/src/battery.h
@@ -1,7 +1,7 @@
 /**
  * Battery Buddy, a Sailfish application to prolong battery lifetime
  *
- * Copyright (C) 2019 Matti Viljanen
+ * Copyright (C) 2019-2020 Matti Viljanen
  *
  * Battery Buddy is free software: you can redistribute it and/or modify it under the terms of the
  * GNU General Public License as published by the Free Software Foundation, either version 3 of the
diff --git a/service/src/harbour-batterybuddy-daemon.cpp b/service/src/harbour-batterybuddy-daemon.cpp
index b7e9440..d4f80f5 100644
--- a/service/src/harbour-batterybuddy-daemon.cpp
+++ b/service/src/harbour-batterybuddy-daemon.cpp
@@ -1,3 +1,20 @@
+/**
+ * Battery Buddy, a Sailfish application to prolong battery lifetime
+ *
+ * Copyright (C) 2019-2020 Matti Viljanen
+ *
+ * Battery Buddy is free software: you can redistribute it and/or modify it under the terms of the
+ * GNU General Public License as published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * Battery Buddy 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 General Public License for more details. You should have received a copy of the GNU
+ * General Public License along with Battery Buddy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Matti Viljanen
+ */
 #include <QCoreApplication>
 #include <QObject>
 #include <QTimer>
diff --git a/service/src/notification.h b/service/src/notification.h
index 0299e0f..d49ec48 100644
--- a/service/src/notification.h
+++ b/service/src/notification.h
@@ -1,7 +1,7 @@
 /**
  * Battery Buddy, a Sailfish application to prolong battery lifetime
  *
- * Copyright (C) 2019 Matti Viljanen
+ * Copyright (C) 2019-2020 Matti Viljanen
  *
  * Battery Buddy is free software: you can redistribute it and/or modify it under the terms of the
  * GNU General Public License as published by the Free Software Foundation, either version 3 of the