diff --git a/libs/ui/tool/KisToolChangesTracker.cpp b/libs/ui/tool/KisToolChangesTracker.cpp
index b740644148..2ea8dd0997 100644
--- a/libs/ui/tool/KisToolChangesTracker.cpp
+++ b/libs/ui/tool/KisToolChangesTracker.cpp
@@ -1,46 +1,64 @@
+/*
+ *  Copyright (c) 2018 Dmitry Kazakov <dimula73@gmail.com>
+ *
+ *  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 "KisToolChangesTracker.h"
 
 #include "kis_global.h"
 #include <QSharedPointer>
 
 struct KisToolChangesTracker::Private {
     QList<KisToolChangesTrackerDataSP> undoStack;
 };
 
 
 KisToolChangesTracker::KisToolChangesTracker()
     : m_d(new Private)
 {
 }
 
 KisToolChangesTracker::~KisToolChangesTracker()
 {
 }
 
 void KisToolChangesTracker::commitConfig(KisToolChangesTrackerDataSP state)
 {
     m_d->undoStack.append(state);
 }
 
 void KisToolChangesTracker::requestUndo()
 {
     if (m_d->undoStack.size() > 1) {
         m_d->undoStack.removeLast();
         emit sigConfigChanged(m_d->undoStack.last());
     }
 }
 
 KisToolChangesTrackerDataSP KisToolChangesTracker::lastState() const
 {
     return !m_d->undoStack.isEmpty() ? m_d->undoStack.last() : 0;
 }
 
 void KisToolChangesTracker::reset()
 {
     m_d->undoStack.clear();
 }
 
 bool KisToolChangesTracker::isEmpty() const
 {
     return m_d->undoStack.isEmpty();
 }
diff --git a/libs/ui/tool/KisToolChangesTracker.h b/libs/ui/tool/KisToolChangesTracker.h
index e81c568512..3d4fb5ac5a 100644
--- a/libs/ui/tool/KisToolChangesTracker.h
+++ b/libs/ui/tool/KisToolChangesTracker.h
@@ -1,31 +1,49 @@
+/*
+ *  Copyright (c) 2018 Dmitry Kazakov <dimula73@gmail.com>
+ *
+ *  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 KISTOOLCHANGESTRACKER_H
 #define KISTOOLCHANGESTRACKER_H
 
 #include "kritaui_export.h"
 #include <QScopedPointer>
 #include "KisToolChangesTrackerData.h"
 
 class KRITAUI_EXPORT KisToolChangesTracker :public QObject
 {
     Q_OBJECT
 
 public:
     KisToolChangesTracker();
     ~KisToolChangesTracker();
 
     void commitConfig(KisToolChangesTrackerDataSP state);
     void requestUndo();
     KisToolChangesTrackerDataSP lastState() const;
     void reset();
 
     bool isEmpty() const;
 
 Q_SIGNALS:
     void sigConfigChanged(KisToolChangesTrackerDataSP state);
 
 private:
     struct Private;
     const QScopedPointer<Private> m_d;
 };
 
 #endif // KISTOOLCHANGESTRACKER_H
diff --git a/libs/ui/tool/KisToolChangesTrackerData.cpp b/libs/ui/tool/KisToolChangesTrackerData.cpp
index 3cce59c497..f0c3fc51e8 100644
--- a/libs/ui/tool/KisToolChangesTrackerData.cpp
+++ b/libs/ui/tool/KisToolChangesTrackerData.cpp
@@ -1,18 +1,36 @@
+/*
+ *  Copyright (c) 2018 Dmitry Kazakov <dimula73@gmail.com>
+ *
+ *  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 "KisToolChangesTrackerData.h"
 
 struct KisToolChangesTrackerDataSPRegistrar {
     KisToolChangesTrackerDataSPRegistrar() {
         qRegisterMetaType<KisToolChangesTrackerDataSP>("KisToolChangesTrackerDataSP");
     }
 };
 static KisToolChangesTrackerDataSPRegistrar __registrar;
 
 
 KisToolChangesTrackerData::~KisToolChangesTrackerData()
 {
 }
 
 KisToolChangesTrackerData *KisToolChangesTrackerData::clone() const
 {
     return new KisToolChangesTrackerData(*this);
 }
diff --git a/libs/ui/tool/KisToolChangesTrackerData.h b/libs/ui/tool/KisToolChangesTrackerData.h
index 6f879a91b5..cfcb7d866d 100644
--- a/libs/ui/tool/KisToolChangesTrackerData.h
+++ b/libs/ui/tool/KisToolChangesTrackerData.h
@@ -1,19 +1,37 @@
+/*
+ *  Copyright (c) 2018 Dmitry Kazakov <dimula73@gmail.com>
+ *
+ *  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 KISTOOLCHANGESTRACKERDATA_H
 #define KISTOOLCHANGESTRACKERDATA_H
 
 #include <QObject>
 #include "kritaui_export.h"
 #include <QSharedPointer>
 
 class KRITAUI_EXPORT KisToolChangesTrackerData
 {
 public:
     virtual ~KisToolChangesTrackerData();
     virtual KisToolChangesTrackerData* clone() const;
 };
 
 typedef QSharedPointer<KisToolChangesTrackerData> KisToolChangesTrackerDataSP;
 
 Q_DECLARE_METATYPE(KisToolChangesTrackerDataSP)
 
 #endif // KISTOOLCHANGESTRACKERDATA_H