diff --git a/qt/DetectorTableModel.cpp b/qt/DetectorTableModel.cpp
index 40b16f99..2bac1e00 100644
--- a/qt/DetectorTableModel.cpp
+++ b/qt/DetectorTableModel.cpp
@@ -1,5 +1,13 @@
-#include "DetectorTableModel.h"
+/*---------------------------------------------------------*\
+| DetectorTableModel.cpp                                    |
+|                                                           |
+|   Table model for detector list                           |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
 
+#include "DetectorTableModel.h"
 #include "SettingsManager.h"
 
 DetectorTableModel::DetectorTableModel(QObject* parent) : QAbstractTableModel(parent)
diff --git a/qt/DetectorTableModel.h b/qt/DetectorTableModel.h
index 1f47beec..7bbde2e7 100644
--- a/qt/DetectorTableModel.h
+++ b/qt/DetectorTableModel.h
@@ -1,5 +1,13 @@
-#ifndef DETECTORTABLEMODEL_H
-#define DETECTORTABLEMODEL_H
+/*---------------------------------------------------------*\
+| DetectorTableModel.h                                      |
+|                                                           |
+|   Table model for detector list                           |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
+#pragma once
 
 #include <QSortFilterProxyModel>
 #include <QAbstractTableModel>
@@ -31,5 +39,3 @@ public slots:
     void applySettings();
     void toggleAll(const bool state, QSortFilterProxyModel* detectorSortModel);
 };
-
-#endif // DETECTORTABLEMODEL_H
diff --git a/qt/DeviceView.cpp b/qt/DeviceView.cpp
index f034db31..2f3ce8fe 100644
--- a/qt/DeviceView.cpp
+++ b/qt/DeviceView.cpp
@@ -1,22 +1,25 @@
-/*-----------------------------------------------------*\
-| DeviceView.cpp                                        |
-|                                                       |
-|  OpenRGB Device view widget for Qt                    |
-|                                                       |
-| Adam Honse (calcprogrammer1@gmail.com)                |
-\*-----------------------------------------------------*/
+/*---------------------------------------------------------*\
+| DeviceView.cpp                                            |
+|                                                           |
+|   OpenRGB Device view widget for Qt                       |
+|                                                           |
+|   Adam Honse (calcprogrammer1@gmail.com)                  |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
 
-#include "DeviceView.h"
-#include "ResourceManager.h"
-#include "RGBControllerKeyNames.h"
-#include "RGBController.h"
-#include "SettingsManager.h"
 #include <QPainter>
 #include <QResizeEvent>
 #include <QStyleOption>
 #include <QtCore/qmath.h>
 #include <QDebug>
 #include <QMouseEvent>
+#include "DeviceView.h"
+#include "ResourceManager.h"
+#include "RGBControllerKeyNames.h"
+#include "RGBController.h"
+#include "SettingsManager.h"
 
 #define MAX_COLS    20
 #define PAD_LED     0.1f
diff --git a/qt/DeviceView.h b/qt/DeviceView.h
index 6f775d92..e0f7f3ee 100644
--- a/qt/DeviceView.h
+++ b/qt/DeviceView.h
@@ -1,5 +1,15 @@
-#ifndef DEVICEVIEW_H
-#define DEVICEVIEW_H
+/*---------------------------------------------------------*\
+| DeviceView.h                                              |
+|                                                           |
+|   OpenRGB Device view widget for Qt                       |
+|                                                           |
+|   Adam Honse (calcprogrammer1@gmail.com)                  |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
+#pragma once
 
 #include <QWidget>
 #include "RGBController.h"
@@ -74,5 +84,3 @@ public slots:
     void clearSelection(); // Same as selecting the entire device
     void setSelectionColor(RGBColor);
 };
-
-#endif // DEVICEVIEW_H
diff --git a/qt/OpenRGBFont.cpp b/qt/OpenRGBFont.cpp
index 15768b15..9913c7bc 100644
--- a/qt/OpenRGBFont.cpp
+++ b/qt/OpenRGBFont.cpp
@@ -1,10 +1,21 @@
-#include "OpenRGBFont.h"
+/*---------------------------------------------------------*\
+| OpenRGBFont.cpp                                           |
+|                                                           |
+|   Functionality for OpenRGB custom font icons             |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
 #include <QStringList>
 #include <QFontDatabase>
+#include "OpenRGBFont.h"
 
 OpenRGBFont* OpenRGBFont::instance;
 
-OpenRGBFont::OpenRGBFont(){}
+OpenRGBFont::OpenRGBFont()
+{
+}
 
 OpenRGBFont *OpenRGBFont::Get()
 {
diff --git a/qt/OpenRGBFont.h b/qt/OpenRGBFont.h
index 1563a774..415b1d0c 100644
--- a/qt/OpenRGBFont.h
+++ b/qt/OpenRGBFont.h
@@ -1,5 +1,13 @@
-#ifndef OPENRGBFONT_H
-#define OPENRGBFONT_H
+/*---------------------------------------------------------*\
+| OpenRGBFont.h                                             |
+|                                                           |
+|   Functionality for OpenRGB custom font icons             |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
+#pragma once
 
 #include <QFont>
 #include <QString>
@@ -9,7 +17,8 @@ class OpenRGBFont
 public:
     static OpenRGBFont* Get();
 
-    enum Glyph {
+    enum Glyph
+    {
         bulb                = 0xF001,
         controller          = 0xF002,
         cooler              = 0xF003,
@@ -50,5 +59,3 @@ private:
     int fontId = -1;
     QFont font;
 };
-
-#endif // OPENRGBFONT_H
diff --git a/qt/OpenRGBThemeManager.cpp b/qt/OpenRGBThemeManager.cpp
index 1164b42d..4f3c992a 100644
--- a/qt/OpenRGBThemeManager.cpp
+++ b/qt/OpenRGBThemeManager.cpp
@@ -1,7 +1,12 @@
-#include "OpenRGBThemeManager.h"
-#include "ResourceManager.h"
-#include "PluginManager.h"
-#include "SettingsManager.h"
+/*---------------------------------------------------------*\
+| OpenRGBThemeManager.cpp                                   |
+|                                                           |
+|   Functionality for managing dark theme mode              |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
 #include <QApplication>
 #include <QWidget>
 #include <QStyle>
@@ -12,6 +17,11 @@
 #include <QSettings>
 #endif
 
+#include "OpenRGBThemeManager.h"
+#include "ResourceManager.h"
+#include "PluginManager.h"
+#include "SettingsManager.h"
+
 void OpenRGBThemeManager::Init()
 {
 
diff --git a/qt/OpenRGBThemeManager.h b/qt/OpenRGBThemeManager.h
index f885338d..334da2fe 100644
--- a/qt/OpenRGBThemeManager.h
+++ b/qt/OpenRGBThemeManager.h
@@ -1,5 +1,13 @@
-#ifndef OPENRGBTHEMEMANAGER_H
-#define OPENRGBTHEMEMANAGER_H
+/*---------------------------------------------------------*\
+| OpenRGBThemeManager.h                                     |
+|                                                           |
+|   Functionality for managing dark theme mode              |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
+#pragma once
 
 #include <string>
 
@@ -10,5 +18,3 @@ public:
     static void SetDarkTheme();
     static bool IsDarkTheme();
 };
-
-#endif // OPENRGBTHEMEMANAGER_H
diff --git a/qt/QTooltipedSlider.cpp b/qt/QTooltipedSlider.cpp
index 97bdfe07..ad7117e4 100644
--- a/qt/QTooltipedSlider.cpp
+++ b/qt/QTooltipedSlider.cpp
@@ -1,9 +1,18 @@
-#include "QTooltipedSlider.h"
+/*---------------------------------------------------------*\
+| QTooltipedSlider.cpp                                      |
+|                                                           |
+|   Qt widget for OpenRGB tooltiped slider                  |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
 #include <QToolTip>
+#include "QTooltipedSlider.h"
 
 QTooltipedSlider::QTooltipedSlider(QWidget *parent) :
     QSlider(parent)
-{    
+{
     connect(this, &QSlider::sliderMoved,[&](int value) {
         QToolTip::showText(QCursor::pos(), QString("%1").arg(value), nullptr);
     });
diff --git a/qt/QTooltipedSlider.h b/qt/QTooltipedSlider.h
index 95e67426..6ae5e523 100644
--- a/qt/QTooltipedSlider.h
+++ b/qt/QTooltipedSlider.h
@@ -1,5 +1,13 @@
-#ifndef QTOOLTIPEDSLIDER_H
-#define QTOOLTIPEDSLIDER_H
+/*---------------------------------------------------------*\
+| QTooltipedSlider.h                                        |
+|                                                           |
+|   Qt widget for OpenRGB tooltiped slider                  |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
+#pragma once
 
 #include <QSlider>
 
@@ -10,5 +18,3 @@ class QTooltipedSlider : public QSlider
 public:
     explicit QTooltipedSlider(QWidget *parent = nullptr);
 };
-
-#endif // QTOOLTIPEDSLIDER_H
diff --git a/qt/TabLabel.cpp b/qt/TabLabel.cpp
index fb8078ff..2e0c2813 100644
--- a/qt/TabLabel.cpp
+++ b/qt/TabLabel.cpp
@@ -1,5 +1,14 @@
-#include "TabLabel.h"
+/*---------------------------------------------------------*\
+| TabLabel.cpp                                              |
+|                                                           |
+|   Qt widget for OpenRGB tab label                         |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
 #include <QFontMetrics>
+#include "TabLabel.h"
 #include "OpenRGBFont.h"
 
 Ui::TabLabel::TabLabel(int icon, QString name, char* original, char* context) :
diff --git a/qt/TabLabel.h b/qt/TabLabel.h
index 40ab2f63..6ca8e868 100644
--- a/qt/TabLabel.h
+++ b/qt/TabLabel.h
@@ -1,11 +1,20 @@
-#ifndef TABLABEL_H
-#define TABLABEL_H
+/*---------------------------------------------------------*\
+| TabLabel.h                                                |
+|                                                           |
+|   Qt widget for OpenRGB tab label                         |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
+#pragma once
 
 #include <QWidget>
 #include "ui_TabLabel.h"
 
-namespace Ui {
-class TabLabel;
+namespace Ui
+{
+    class TabLabel;
 }
 
 class Ui::TabLabel : public QWidget
@@ -24,5 +33,3 @@ private:
 private slots:
     void changeEvent(QEvent *event);
 };
-
-#endif // TABLABEL_H
diff --git a/qt/macutils.h b/qt/macutils.h
index 53d6ece9..8cdec335 100644
--- a/qt/macutils.h
+++ b/qt/macutils.h
@@ -1,3 +1,12 @@
+/*---------------------------------------------------------*\
+| macutils.h                                                |
+|                                                           |
+|   Utility function for dockless mode in MacOS             |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
 #ifndef MACUTILS_H
 #define MACUTILS_H
 
diff --git a/qt/macutils.mm b/qt/macutils.mm
index 10f299dc..11226d8a 100644
--- a/qt/macutils.mm
+++ b/qt/macutils.mm
@@ -1,3 +1,12 @@
+/*---------------------------------------------------------*\
+| macutils.mm                                               |
+|                                                           |
+|   Utility function for dockless mode in MacOS             |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
 #import <Cocoa/Cocoa.h>
 #include "macutils.h"