diff --git a/src/ui/HILDockWidget.h b/src/ui/HILDockWidget.h
index d2d14e3a72db9ab893cb278866e2d543a4b06583..5e75bb3c5f970fecbf836af5380d95c3c5b20b16 100644
--- a/src/ui/HILDockWidget.h
+++ b/src/ui/HILDockWidget.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ *   (c) 2009-2018 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
  *
  * QGroundControl is licensed according to the terms in the file
  * COPYING.md in the root of the source code directory.
@@ -8,8 +8,7 @@
  ****************************************************************************/
 
 
-#ifndef HILDockWidget_H
-#define HILDockWidget_H
+#pragma once
 
 #include "MultiVehicleDockWidget.h"
 
@@ -26,4 +25,3 @@ protected:
     virtual QWidget* _newVehicleWidget(Vehicle* vehicle, QWidget* parent);
 };
 
-#endif
diff --git a/src/ui/MAVLinkDecoder.h b/src/ui/MAVLinkDecoder.h
index 9f715bace9ef7fe24d30f2aa4f6eb56b1358bb3c..50df5e105b258ef48ea5841e0d54d28034bd3a94 100644
--- a/src/ui/MAVLinkDecoder.h
+++ b/src/ui/MAVLinkDecoder.h
@@ -1,5 +1,4 @@
-#ifndef MAVLINKDECODER_H
-#define MAVLINKDECODER_H
+#pragma once
 
 #include <QObject>
 #include <QHash>
@@ -53,4 +52,3 @@ protected:
     QThread* creationThread;                                ///< QThread on which the object is created
 };
 
-#endif // MAVLINKDECODER_H
diff --git a/src/ui/MainWindow.h b/src/ui/MainWindow.h
index 40ffafb45b6381948a4d09b0476a8c9ebd889608..98c2897b152562396bfa4dde5c994a4084b769cf 100644
--- a/src/ui/MainWindow.h
+++ b/src/ui/MainWindow.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ *   (c) 2009-2018 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
  *
  * QGroundControl is licensed according to the terms in the file
  * COPYING.md in the root of the source code directory.
@@ -15,8 +15,7 @@
  *
  */
 
-#ifndef _MAINWINDOW_H_
-#define _MAINWINDOW_H_
+#pragma once
 
 #ifdef __mobile__
 #error Should not be include in mobile build
@@ -181,4 +180,3 @@ private:
     QString _getWindowGeometryKey();
 };
 
-#endif /* _MAINWINDOW_H_ */
diff --git a/src/ui/MultiVehicleDockWidget.h b/src/ui/MultiVehicleDockWidget.h
index d22a6c06bab6a16caf19f4ee1da952f5cc356c2e..12557b10312121ed2a39cb937982a2e71faefceb 100644
--- a/src/ui/MultiVehicleDockWidget.h
+++ b/src/ui/MultiVehicleDockWidget.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ *   (c) 2009-2018 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
  *
  * QGroundControl is licensed according to the terms in the file
  * COPYING.md in the root of the source code directory.
@@ -8,8 +8,7 @@
  ****************************************************************************/
 
 
-#ifndef MultiVehicleDockWidget_H
-#define MultiVehicleDockWidget_H
+#pragma once
 
 #include <QMap>
 
@@ -51,4 +50,3 @@ private:
     Ui::MultiVehicleDockWidget* _ui;
 };
 
-#endif
diff --git a/src/ui/QGCHilConfiguration.h b/src/ui/QGCHilConfiguration.h
index ffcb2f440e2c41f9ccb6724d68f9f99030527355..331fef97d1b22b5c1b641fa1f3bec5a3bf927f1b 100644
--- a/src/ui/QGCHilConfiguration.h
+++ b/src/ui/QGCHilConfiguration.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ *   (c) 2009-2018 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
  *
  * QGroundControl is licensed according to the terms in the file
  * COPYING.md in the root of the source code directory.
@@ -8,8 +8,7 @@
  ****************************************************************************/
 
 
-#ifndef QGCHILCONFIGURATION_H
-#define QGCHILCONFIGURATION_H
+#pragma once
 
 #include <QWidget>
 
@@ -41,4 +40,3 @@ private:
     Ui::QGCHilConfiguration *ui;
 };
 
-#endif // QGCHILCONFIGURATION_H
diff --git a/src/ui/QGCHilFlightGearConfiguration.h b/src/ui/QGCHilFlightGearConfiguration.h
index 6ebd999b6f3383c8ee8c817865dd490536d4906e..e69176fe7242c811ce1865bd3b946102f4af1387 100644
--- a/src/ui/QGCHilFlightGearConfiguration.h
+++ b/src/ui/QGCHilFlightGearConfiguration.h
@@ -1,5 +1,4 @@
-#ifndef QGCHILFLIGHTGEARCONFIGURATION_H
-#define QGCHILFLIGHTGEARCONFIGURATION_H
+#pragma once
 
 #include <QWidget>
 
@@ -53,4 +52,3 @@ signals:
      void barometerOffsetChanged(float barometerOffsetkPa);
 };
 
-#endif // QGCHILFLIGHTGEARCONFIGURATION_H
diff --git a/src/ui/QGCHilJSBSimConfiguration.h b/src/ui/QGCHilJSBSimConfiguration.h
index b03bdf4a0f16fa0251f058c8499918292a42edcb..99ce61b261b32df914f6579ecb8adc944f4ea7b3 100644
--- a/src/ui/QGCHilJSBSimConfiguration.h
+++ b/src/ui/QGCHilJSBSimConfiguration.h
@@ -1,5 +1,4 @@
-#ifndef QGCHILJSBSIMCONFIGURATION_H
-#define QGCHILJSBSIMCONFIGURATION_H
+#pragma once
 
 #include <QWidget>
 
@@ -29,4 +28,3 @@ private:
     Ui::QGCHilJSBSimConfiguration *ui;
 };
 
-#endif // QGCHILJSBSIMCONFIGURATION_H
diff --git a/src/ui/QGCHilXPlaneConfiguration.h b/src/ui/QGCHilXPlaneConfiguration.h
index e03e232d8630606abc9a2380f78e7bd9c74ae55d..082625188fb3f934aefb6c224ac9c24be08d5f5d 100644
--- a/src/ui/QGCHilXPlaneConfiguration.h
+++ b/src/ui/QGCHilXPlaneConfiguration.h
@@ -1,5 +1,4 @@
-#ifndef QGCHILXPLANECONFIGURATION_H
-#define QGCHILXPLANECONFIGURATION_H
+#pragma once
 
 #include <QWidget>
 
@@ -31,4 +30,3 @@ private:
     Ui::QGCHilXPlaneConfiguration *ui;
 };
 
-#endif // QGCHILXPLANECONFIGURATION_H
diff --git a/src/ui/QGCMAVLinkInspector.h b/src/ui/QGCMAVLinkInspector.h
index cd5084d6699bb368edd21ecfef060fb97967526e..3953beab033a8fe083c64d9536e5dacdcfc045d9 100644
--- a/src/ui/QGCMAVLinkInspector.h
+++ b/src/ui/QGCMAVLinkInspector.h
@@ -1,5 +1,4 @@
-#ifndef QGCMAVLINKINSPECTOR_H
-#define QGCMAVLINKINSPECTOR_H
+#pragma once
 
 #include <QMap>
 #include <QTimer>
@@ -72,4 +71,3 @@ private:
     Ui::QGCMAVLinkInspector *ui;
 };
 
-#endif // QGCMAVLINKINSPECTOR_H
diff --git a/src/ui/QGCMAVLinkLogPlayer.h b/src/ui/QGCMAVLinkLogPlayer.h
index f83d268347b3a765d180372caa99d411f13a81f2..dfa80e254cfc4e8242574a28eabd84114916bf47 100644
--- a/src/ui/QGCMAVLinkLogPlayer.h
+++ b/src/ui/QGCMAVLinkLogPlayer.h
@@ -1,5 +1,4 @@
-#ifndef QGCMAVLINKLOGPLAYER_H
-#define QGCMAVLINKLOGPLAYER_H
+#pragma once
 
 #include <QWidget>
 #include <QFile>
@@ -56,4 +55,3 @@ private:
     Ui::QGCMAVLinkLogPlayer* _ui;
 };
 
-#endif
diff --git a/src/ui/QGCMapRCToParamDialog.h b/src/ui/QGCMapRCToParamDialog.h
index 723849402c40b4eaa8a08b53f4bb2f629c1ac57d..56a46bc3d2641add668032bb81c0ecf2c42dd83e 100644
--- a/src/ui/QGCMapRCToParamDialog.h
+++ b/src/ui/QGCMapRCToParamDialog.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ *   (c) 2009-2018 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
  *
  * QGroundControl is licensed according to the terms in the file
  * COPYING.md in the root of the source code directory.
@@ -12,8 +12,7 @@
 ///     @brief Dialog to configure RC to parameter mapping
 ///     @author Thomas Gubler <thomasgubler@gmail.com>
 
-#ifndef QGCMAPRCTOPARAMDIALOG_H
-#define QGCMAPRCTOPARAMDIALOG_H
+#pragma once
 
 #include <QDialog>
 #include <QThread>
@@ -57,4 +56,3 @@ private:
     Ui::QGCMapRCToParamDialog*  ui;
 };
 
-#endif // QGCMAPRCTOPARAMDIALOG_H
diff --git a/src/ui/QGCPluginHost.h b/src/ui/QGCPluginHost.h
index fe78e6cad085fe7716c524460878fd048db3468b..c732d6b348646bd2bf8976c62fcd266a0efadc26 100644
--- a/src/ui/QGCPluginHost.h
+++ b/src/ui/QGCPluginHost.h
@@ -1,5 +1,4 @@
-#ifndef QGCPLUGINHOST_H
-#define QGCPLUGINHOST_H
+#pragma once
 
 #include <QWidget>
 
@@ -19,4 +18,3 @@ private:
     Ui::QGCPluginHost *ui;
 };
 
-#endif // QGCPLUGINHOST_H
diff --git a/src/ui/QGCUASFileView.h b/src/ui/QGCUASFileView.h
index a7740056a44e67421c2e07c37ebd586af635c9bb..86e74dfdf94cfc1b0b1f7ef618f33ebc46362783 100644
--- a/src/ui/QGCUASFileView.h
+++ b/src/ui/QGCUASFileView.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ *   (c) 2009-2018 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
  *
  * QGroundControl is licensed according to the terms in the file
  * COPYING.md in the root of the source code directory.
@@ -8,8 +8,7 @@
  ****************************************************************************/
 
 
-#ifndef QGCUASFILEVIEW_H
-#define QGCUASFILEVIEW_H
+#pragma once
 
 #include <QWidget>
 #include <QTreeWidgetItem>
@@ -64,4 +63,3 @@ private:
     CommandState _currentCommand;   ///< Current active command
 };
 
-#endif // QGCUASFILEVIEW_H
diff --git a/src/ui/QGCUASFileViewMulti.h b/src/ui/QGCUASFileViewMulti.h
index eedc93695cc389a34b4b3d5d68168196f07eb765..69c05e115751e6d846b9952ea01920b12e3c4e37 100644
--- a/src/ui/QGCUASFileViewMulti.h
+++ b/src/ui/QGCUASFileViewMulti.h
@@ -1,5 +1,4 @@
-#ifndef QGCUASFILEVIEWMULTI_H
-#define QGCUASFILEVIEWMULTI_H
+#pragma once
 
 #include <QMap>
 
@@ -33,4 +32,3 @@ private:
     Ui::QGCUASFileViewMulti *ui;
 };
 
-#endif // QGCUASFILEVIEWMULTI_H
diff --git a/src/ui/linechart/ChartPlot.h b/src/ui/linechart/ChartPlot.h
index 1a6a5b52a3ee90a515995bf91e96e51c6903391a..51a7892bbdc9ff3730c7f7208ba35ebf57921dd7 100644
--- a/src/ui/linechart/ChartPlot.h
+++ b/src/ui/linechart/ChartPlot.h
@@ -1,5 +1,4 @@
-#ifndef CHARTPLOT_H
-#define CHARTPLOT_H
+#pragma once
 
 #include <qwt_plot.h>
 #include <qwt_plot_grid.h>
@@ -42,4 +41,3 @@ protected:
     float _gridWidth;    ///< Width of gridlines in pixels
 };
 
-#endif // CHARTPLOT_H
diff --git a/src/ui/linechart/IncrementalPlot.h b/src/ui/linechart/IncrementalPlot.h
index 75133766de6feb44dfd770ff9adcab391b521b37..422641df3c4cb38b56d31c1a1389fb3a84d21c00 100644
--- a/src/ui/linechart/IncrementalPlot.h
+++ b/src/ui/linechart/IncrementalPlot.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ *   (c) 2009-2018 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
  *
  * QGroundControl is licensed according to the terms in the file
  * COPYING.md in the root of the source code directory.
@@ -15,8 +15,7 @@
  *
  */
 
-#ifndef INCREMENTALPLOT_H
-#define INCREMENTALPLOT_H
+#pragma once
 
 #include <QTimer>
 #include <qwt_plot.h>
@@ -117,4 +116,3 @@ private:
     void updateStyle(QwtPlotCurve *curve);
 };
 
-#endif /* INCREMENTALPLOT_H */
diff --git a/src/ui/linechart/LinechartPlot.h b/src/ui/linechart/LinechartPlot.h
index 2d6e38e9f02b58b129386692aa892c0fffc7dcc9..2a21e531b99f4c29b547234f6747f953687537c4 100644
--- a/src/ui/linechart/LinechartPlot.h
+++ b/src/ui/linechart/LinechartPlot.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ *   (c) 2009-2018 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
  *
  * QGroundControl is licensed according to the terms in the file
  * COPYING.md in the root of the source code directory.
@@ -16,8 +16,7 @@
  *
  */
 
-#ifndef _LINECHARTPLOT_H_
-#define _LINECHARTPLOT_H_
+#pragma once
 
 #define QUINT64_MIN Q_UINT64_C(0)
 #define QUINT64_MAX Q_UINT64_C(18446744073709551615)
@@ -296,4 +295,3 @@ signals:
     void windowPositionChanged(quint64 position);
 };
 
-#endif // _LINECHARTPLOT_H_
diff --git a/src/ui/linechart/LinechartWidget.h b/src/ui/linechart/LinechartWidget.h
index 99e61caea759f85661275a653542562db1f85970..1fdd63ab4aa5c70f25cd0f6277a58e2fa0bc8dfc 100644
--- a/src/ui/linechart/LinechartWidget.h
+++ b/src/ui/linechart/LinechartWidget.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ *   (c) 2009-2018 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
  *
  * QGroundControl is licensed according to the terms in the file
  * COPYING.md in the root of the source code directory.
@@ -15,8 +15,7 @@
  *   @author Lorenz Meier <mavteam@student.ethz.ch>
  *   @author Thomas Gubler <thomasgubler@student.ethz.ch>
  */
-#ifndef LINECHARTWIDGET_H
-#define LINECHARTWIDGET_H
+#pragma once
 
 #include <QGridLayout>
 #include <QWidget>
@@ -202,4 +201,3 @@ private:
     QTimer _filterTimer;
 };
 
-#endif // LINECHARTWIDGET_H
diff --git a/src/ui/linechart/Linecharts.h b/src/ui/linechart/Linecharts.h
index 198667118c8191832412ee710d5e0876ca6064d6..c50fe546014bf8565da58002727adb891946c05a 100644
--- a/src/ui/linechart/Linecharts.h
+++ b/src/ui/linechart/Linecharts.h
@@ -1,5 +1,4 @@
-#ifndef LINECHARTS_H
-#define LINECHARTS_H
+#pragma once
 
 #include <QStackedWidget>
 #include <QMap>
@@ -29,4 +28,3 @@ private:
     MAVLinkDecoder* _mavlinkDecoder;
 };
 
-#endif // LINECHARTS_H
diff --git a/src/ui/linechart/ScrollZoomer.h b/src/ui/linechart/ScrollZoomer.h
index fbbbe18f26c9e254cc371a13952353097237afa2..c89ebe79de8de1d226603158790d9513f7785966 100644
--- a/src/ui/linechart/ScrollZoomer.h
+++ b/src/ui/linechart/ScrollZoomer.h
@@ -1,5 +1,4 @@
-#ifndef _SCROLLZOOMER_H
-#define _SCROLLZOOMER_H
+#pragma once
 
 #include <qglobal.h>
 #if QT_VERSION < 0x040000
@@ -73,4 +72,3 @@ private:
     bool d_inZoom;
 };
 
-#endif
diff --git a/src/ui/linechart/Scrollbar.h b/src/ui/linechart/Scrollbar.h
index 0587dd0fccfa7c9e3dd53c356e3f6771cfcac4d6..7466014cb315e3762a8e33369981d6b354489db0 100644
--- a/src/ui/linechart/Scrollbar.h
+++ b/src/ui/linechart/Scrollbar.h
@@ -1,5 +1,4 @@
-#ifndef _SCROLLBAR_H
-#define _SCROLLBAR_H 1
+#pragma once
 
 #include <qscrollbar.h>
 
@@ -49,5 +48,3 @@ private:
     double d_maxBase;
     int d_baseTicks;
 };
-
-#endif
diff --git a/src/ui/uas/QGCUnconnectedInfoWidget.h b/src/ui/uas/QGCUnconnectedInfoWidget.h
index 60a522f06bc4d6b5a1d98f2929f0b82660297c53..a38943f04311efe018bfb5cc56eac9709765a4ba 100644
--- a/src/ui/uas/QGCUnconnectedInfoWidget.h
+++ b/src/ui/uas/QGCUnconnectedInfoWidget.h
@@ -1,5 +1,4 @@
-#ifndef QGCUNCONNECTEDINFOWIDGET_H
-#define QGCUNCONNECTEDINFOWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -35,4 +34,3 @@ public slots:
     void addLink();
 };
 
-#endif // QGCUNCONNECTEDINFOWIDGET_H