diff --git a/src/DetachableTabBar.h b/src/DetachableTabBar.h
--- a/src/DetachableTabBar.h
+++ b/src/DetachableTabBar.h
@@ -1,3 +1,22 @@
+/*
+    Copyright 2018 by Tomaz Canabrava <tcanabrava@kde.org>
+
+    This program 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 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+    02110-1301  USA.
+*/
+
 #ifndef DETACHABLETABBAR_H
 #define DETACHABLETABBAR_H
 
diff --git a/src/DetachableTabBar.cpp b/src/DetachableTabBar.cpp
--- a/src/DetachableTabBar.cpp
+++ b/src/DetachableTabBar.cpp
@@ -1,3 +1,22 @@
+/*
+    Copyright 2018 by Tomaz Canabrava <tcanabrava@kde.org>
+
+    This program 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 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+    02110-1301  USA.
+*/
+
 #include "DetachableTabBar.h"
 #include <QMouseEvent>