diff --git a/src/DockAreaTabBar.h b/src/DockAreaTabBar.h
index bcb0628..b1275ee 100644
--- a/src/DockAreaTabBar.h
+++ b/src/DockAreaTabBar.h
@@ -1,5 +1,24 @@
 #ifndef DockAreaTabBarH
 #define DockAreaTabBarH
+/*******************************************************************************
+** Qt Advanced Docking System
+** Copyright (C) 2017 Uwe Kindler
+**
+** This library is free software; you can redistribute it and/or
+** modify it under the terms of the GNU Lesser General Public
+** License as published by the Free Software Foundation; either
+** version 2.1 of the License, or (at your option) any later version.
+**
+** This library 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
+** Lesser General Public License for more details.
+**
+** You should have received a copy of the GNU Lesser General Public
+** License along with this library; If not, see <http://www.gnu.org/licenses/>.
+******************************************************************************/
+
+
 //============================================================================
 /// \file   DockAreaTabBar.h
 /// \author Uwe Kindler
diff --git a/src/DockAreaTitleBar.h b/src/DockAreaTitleBar.h
index cd53cd2..ad4dd23 100644
--- a/src/DockAreaTitleBar.h
+++ b/src/DockAreaTitleBar.h
@@ -1,5 +1,24 @@
 #ifndef DockAreaTitleBarH
 #define DockAreaTitleBarH
+/*******************************************************************************
+** Qt Advanced Docking System
+** Copyright (C) 2017 Uwe Kindler
+**
+** This library is free software; you can redistribute it and/or
+** modify it under the terms of the GNU Lesser General Public
+** License as published by the Free Software Foundation; either
+** version 2.1 of the License, or (at your option) any later version.
+**
+** This library 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
+** Lesser General Public License for more details.
+**
+** You should have received a copy of the GNU Lesser General Public
+** License along with this library; If not, see <http://www.gnu.org/licenses/>.
+******************************************************************************/
+
+
 //============================================================================
 /// \file   DockAreaTitleBar.h
 /// \author Uwe Kindler
@@ -7,6 +26,7 @@
 /// \brief  Declaration of CDockAreaTitleBar class
 //============================================================================
 
+
 //============================================================================
 //                                   INCLUDES
 //============================================================================