diff --git a/snapshot.h b/snapshot.h
--- a/snapshot.h
+++ b/snapshot.h
@@ -1,3 +1,22 @@
+/*
+  Copyright © 2015 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot 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.
+
+  serialplot 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 serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #ifndef SNAPSHOT_H
 #define SNAPSHOT_H
 
@@ -7,15 +26,15 @@
 #include <QVector>
 #include <QString>
 
-class SnapShotView;
+class SnapshotView;
 
-class SnapShot : public QObject
+class Snapshot : public QObject
 {
     Q_OBJECT
 
 public:
-    SnapShot(QMainWindow* parent, QString name);
-    ~SnapShot();
+    Snapshot(QMainWindow* parent, QString name);
+    ~Snapshot();
 
     QVector<QVector<QPointF>> data;
     QAction* showAction();
@@ -25,15 +44,15 @@ public:
     void setName(QString name);
 
 signals:
-    void deleteRequested(SnapShot*);
-    void nameChanged(SnapShot*);
+    void deleteRequested(Snapshot*);
+    void nameChanged(Snapshot*);
 
 private:
     QString _name;
     QAction _showAction;
     QAction _deleteAction;
     QMainWindow* mainWindow;
-    SnapShotView* view;
+    SnapshotView* view;
 
 private slots:
     void show();