diff --git a/src/plugins/platforms/qnx/qqnxabstractnavigator.cpp b/src/plugins/platforms/qnx/qqnxabstractnavigator.cpp
index 08da98d690..5a94bff14e 100644
--- a/src/plugins/platforms/qnx/qqnxabstractnavigator.cpp
+++ b/src/plugins/platforms/qnx/qqnxabstractnavigator.cpp
@@ -44,7 +44,7 @@
 #include <QDebug>
 #include <QUrl>
 
-#ifdef QQNXNAVIGATOR_DEBUG
+#if defined(QQNXNAVIGATOR_DEBUG)
 #define qNavigatorDebug qDebug
 #else
 #define qNavigatorDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxbpseventfilter.cpp b/src/plugins/platforms/qnx/qqnxbpseventfilter.cpp
index 765853e392..d94d3c092a 100644
--- a/src/plugins/platforms/qnx/qqnxbpseventfilter.cpp
+++ b/src/plugins/platforms/qnx/qqnxbpseventfilter.cpp
@@ -53,7 +53,7 @@
 #include <bps/navigator.h>
 #include <bps/screen.h>
 
-#ifdef QQNXBPSEVENTFILTER_DEBUG
+#if defined(QQNXBPSEVENTFILTER_DEBUG)
 #define qBpsEventFilterDebug qDebug
 #else
 #define qBpsEventFilterDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxbuffer.cpp b/src/plugins/platforms/qnx/qqnxbuffer.cpp
index 9007af7f70..c5e99a2001 100644
--- a/src/plugins/platforms/qnx/qqnxbuffer.cpp
+++ b/src/plugins/platforms/qnx/qqnxbuffer.cpp
@@ -46,7 +46,7 @@
 #include <errno.h>
 #include <sys/mman.h>
 
-#ifdef QQNXBUFFER_DEBUG
+#if defined(QQNXBUFFER_DEBUG)
 #define qBufferDebug qDebug
 #else
 #define qBufferDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxbuttoneventnotifier.cpp b/src/plugins/platforms/qnx/qqnxbuttoneventnotifier.cpp
index 152b732556..2f531efd8b 100644
--- a/src/plugins/platforms/qnx/qqnxbuttoneventnotifier.cpp
+++ b/src/plugins/platforms/qnx/qqnxbuttoneventnotifier.cpp
@@ -49,7 +49,7 @@
 #include <QtCore/QSocketNotifier>
 #include <QtCore/private/qcore_unix_p.h>
 
-#ifdef QQNXBUTTON_DEBUG
+#if defined(QQNXBUTTON_DEBUG)
 #define qButtonDebug qDebug
 #else
 #define qButtonDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxclipboard.cpp b/src/plugins/platforms/qnx/qqnxclipboard.cpp
index 8286febd35..dfd1345eed 100644
--- a/src/plugins/platforms/qnx/qqnxclipboard.cpp
+++ b/src/plugins/platforms/qnx/qqnxclipboard.cpp
@@ -39,7 +39,7 @@
 **
 ****************************************************************************/
 
-#ifndef QT_NO_CLIPBOARD
+#if !defined(QT_NO_CLIPBOARD)
 
 #include "qqnxclipboard.h"
 
@@ -53,7 +53,7 @@
 #include <clipboard/clipboard.h>
 #include <errno.h>
 
-#ifdef QQNXCLIPBOARD_DEBUG
+#if defined(QQNXCLIPBOARD_DEBUG)
 #define qClipboardDebug qDebug
 #else
 #define qClipboardDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxclipboard.h b/src/plugins/platforms/qnx/qqnxclipboard.h
index e069355adc..561b57299e 100644
--- a/src/plugins/platforms/qnx/qqnxclipboard.h
+++ b/src/plugins/platforms/qnx/qqnxclipboard.h
@@ -44,7 +44,7 @@
 
 #include <QtCore/qglobal.h>
 
-#ifndef QT_NO_CLIPBOARD
+#if !defined(QT_NO_CLIPBOARD)
 #include <qpa/qplatformclipboard.h>
 
 QT_BEGIN_NAMESPACE
diff --git a/src/plugins/platforms/qnx/qqnxcursor.cpp b/src/plugins/platforms/qnx/qqnxcursor.cpp
index 4fdff666d7..3cf857bb27 100644
--- a/src/plugins/platforms/qnx/qqnxcursor.cpp
+++ b/src/plugins/platforms/qnx/qqnxcursor.cpp
@@ -43,7 +43,7 @@
 
 #include <QtCore/QDebug>
 
-#ifdef QQNXCURSOR_DEBUG
+#if defined(QQNXCURSOR_DEBUG)
 #define qCursorDebug qDebug
 #else
 #define qCursorDebug QT_NO_QDEBUG_MACRO
@@ -55,7 +55,7 @@ QQnxCursor::QQnxCursor()
 {
 }
 
-#ifndef QT_NO_CURSOR
+#if !defined(QT_NO_CURSOR)
 void QQnxCursor::changeCursor(QCursor *windowCursor, QWindow *window)
 {
     Q_UNUSED(windowCursor);
diff --git a/src/plugins/platforms/qnx/qqnxcursor.h b/src/plugins/platforms/qnx/qqnxcursor.h
index 5d6a8b2c30..b62c299040 100644
--- a/src/plugins/platforms/qnx/qqnxcursor.h
+++ b/src/plugins/platforms/qnx/qqnxcursor.h
@@ -51,7 +51,7 @@ class QQnxCursor : public QPlatformCursor
 public:
     QQnxCursor();
 
-#ifndef QT_NO_CURSOR
+#if !defined(QT_NO_CURSOR)
     void changeCursor(QCursor *windowCursor, QWindow *window);
 #endif
     void setPos(const QPoint &pos);
diff --git a/src/plugins/platforms/qnx/qqnxfiledialoghelper.cpp b/src/plugins/platforms/qnx/qqnxfiledialoghelper.cpp
index 79d7c7d9ca..0325a33268 100644
--- a/src/plugins/platforms/qnx/qqnxfiledialoghelper.cpp
+++ b/src/plugins/platforms/qnx/qqnxfiledialoghelper.cpp
@@ -51,7 +51,7 @@
 #include <QTimer>
 #include <QWindow>
 
-#ifdef QQNXFILEDIALOGHELPER_DEBUG
+#if defined(QQNXFILEDIALOGHELPER_DEBUG)
 #define qFileDialogHelperDebug qDebug
 #else
 #define qFileDialogHelperDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxglcontext.cpp b/src/plugins/platforms/qnx/qqnxglcontext.cpp
index 1c2ec23fa9..f77bb73614 100644
--- a/src/plugins/platforms/qnx/qqnxglcontext.cpp
+++ b/src/plugins/platforms/qnx/qqnxglcontext.cpp
@@ -50,7 +50,7 @@
 #include <QtGui/QOpenGLContext>
 #include <QtGui/QScreen>
 
-#ifdef QQNXGLCONTEXT_DEBUG
+#if defined(QQNXGLCONTEXT_DEBUG)
 #define qGLContextDebug qDebug
 #else
 #define qGLContextDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxinputcontext_imf.cpp b/src/plugins/platforms/qnx/qqnxinputcontext_imf.cpp
index 0d8f430c73..97a361158e 100644
--- a/src/plugins/platforms/qnx/qqnxinputcontext_imf.cpp
+++ b/src/plugins/platforms/qnx/qqnxinputcontext_imf.cpp
@@ -61,13 +61,13 @@
 #include <process.h>
 #include <sys/keycodes.h>
 
-#ifdef QQNXINPUTCONTEXT_IMF_EVENT_DEBUG
+#if defined(QQNXINPUTCONTEXT_IMF_EVENT_DEBUG)
 #define qInputContextIMFEventDebug qDebug
 #else
 #define qInputContextIMFEventDebug QT_NO_QDEBUG_MACRO
 #endif
 
-#ifdef QQNXINPUTCONTEXT_DEBUG
+#if defined(QQNXINPUTCONTEXT_DEBUG)
 #define qInputContextDebug qDebug
 #else
 #define qInputContextDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxinputcontext_noimf.cpp b/src/plugins/platforms/qnx/qqnxinputcontext_noimf.cpp
index 71b925357a..f444d34b5e 100644
--- a/src/plugins/platforms/qnx/qqnxinputcontext_noimf.cpp
+++ b/src/plugins/platforms/qnx/qqnxinputcontext_noimf.cpp
@@ -47,7 +47,7 @@
 #include <QtCore/QDebug>
 #include <QtGui/QGuiApplication>
 
-#ifdef QQNXINPUTCONTEXT_DEBUG
+#if defined(QQNXINPUTCONTEXT_DEBUG)
 #define qInputContextDebug qDebug
 #else
 #define qInputContextDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxintegration.cpp b/src/plugins/platforms/qnx/qqnxintegration.cpp
index 2d5c2e54e7..5ea4fef698 100644
--- a/src/plugins/platforms/qnx/qqnxintegration.cpp
+++ b/src/plugins/platforms/qnx/qqnxintegration.cpp
@@ -96,7 +96,7 @@
 
 #include <errno.h>
 
-#ifdef QQNXINTEGRATION_DEBUG
+#if defined(QQNXINTEGRATION_DEBUG)
 #define qIntegrationDebug qDebug
 #else
 #define qIntegrationDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxnavigatoreventhandler.cpp b/src/plugins/platforms/qnx/qqnxnavigatoreventhandler.cpp
index d561482b47..30dbb330d7 100644
--- a/src/plugins/platforms/qnx/qqnxnavigatoreventhandler.cpp
+++ b/src/plugins/platforms/qnx/qqnxnavigatoreventhandler.cpp
@@ -45,7 +45,7 @@
 #include <QGuiApplication>
 #include <qpa/qwindowsysteminterface.h>
 
-#ifdef QQNXNAVIGATOREVENTHANDLER_DEBUG
+#if defined(QQNXNAVIGATOREVENTHANDLER_DEBUG)
 #define qNavigatorEventHandlerDebug qDebug
 #else
 #define qNavigatorEventHandlerDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxnavigatoreventnotifier.cpp b/src/plugins/platforms/qnx/qqnxnavigatoreventnotifier.cpp
index 9fa8294815..640944fb45 100644
--- a/src/plugins/platforms/qnx/qqnxnavigatoreventnotifier.cpp
+++ b/src/plugins/platforms/qnx/qqnxnavigatoreventnotifier.cpp
@@ -55,7 +55,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
-#ifdef QQNXNAVIGATOREVENTNOTIFIER_DEBUG
+#if defined(QQNXNAVIGATOREVENTNOTIFIER_DEBUG)
 #define qNavigatorEventNotifierDebug qDebug
 #else
 #define qNavigatorEventNotifierDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxnavigatorpps.cpp b/src/plugins/platforms/qnx/qqnxnavigatorpps.cpp
index 92a94e0a39..1656ab029b 100644
--- a/src/plugins/platforms/qnx/qqnxnavigatorpps.cpp
+++ b/src/plugins/platforms/qnx/qqnxnavigatorpps.cpp
@@ -44,7 +44,7 @@
 #include <QDebug>
 #include <private/qcore_unix_p.h>
 
-#ifdef QQNXNAVIGATOR_DEBUG
+#if defined(QQNXNAVIGATOR_DEBUG)
 #define qNavigatorDebug qDebug
 #else
 #define qNavigatorDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxrasterbackingstore.cpp b/src/plugins/platforms/qnx/qqnxrasterbackingstore.cpp
index 47a72f173b..7204e5bce9 100644
--- a/src/plugins/platforms/qnx/qqnxrasterbackingstore.cpp
+++ b/src/plugins/platforms/qnx/qqnxrasterbackingstore.cpp
@@ -46,7 +46,7 @@
 
 #include <errno.h>
 
-#ifdef QQNXRASTERBACKINGSTORE_DEBUG
+#if defined(QQNXRASTERBACKINGSTORE_DEBUG)
 #define qRasterBackingStoreDebug qDebug
 #else
 #define qRasterBackingStoreDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxrootwindow.cpp b/src/plugins/platforms/qnx/qqnxrootwindow.cpp
index b01d468647..198801a832 100644
--- a/src/plugins/platforms/qnx/qqnxrootwindow.cpp
+++ b/src/plugins/platforms/qnx/qqnxrootwindow.cpp
@@ -46,7 +46,7 @@
 #include <QtCore/QUuid>
 #include <QtCore/QDebug>
 
-#ifdef QQNXROOTWINDOW_DEBUG
+#if defined(QQNXROOTWINDOW_DEBUG)
 #define qRootWindowDebug qDebug
 #else
 #define qRootWindowDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxscreen.cpp b/src/plugins/platforms/qnx/qqnxscreen.cpp
index f9efbde40c..7614abdc6a 100644
--- a/src/plugins/platforms/qnx/qqnxscreen.cpp
+++ b/src/plugins/platforms/qnx/qqnxscreen.cpp
@@ -49,7 +49,7 @@
 
 #include <errno.h>
 
-#ifdef QQNXSCREEN_DEBUG
+#if defined(QQNXSCREEN_DEBUG)
 #define qScreenDebug qDebug
 #else
 #define qScreenDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp b/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp
index 2d3c7608bf..57cfdc5eb6 100644
--- a/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp
+++ b/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp
@@ -50,7 +50,7 @@
 #include <errno.h>
 #include <sys/keycodes.h>
 
-#ifdef QQNXSCREENEVENT_DEBUG
+#if defined(QQNXSCREENEVENT_DEBUG)
 #define qScreenEventDebug qDebug
 #else
 #define qScreenEventDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxscreeneventthread.cpp b/src/plugins/platforms/qnx/qqnxscreeneventthread.cpp
index 8f262a7083..f3f660bc03 100644
--- a/src/plugins/platforms/qnx/qqnxscreeneventthread.cpp
+++ b/src/plugins/platforms/qnx/qqnxscreeneventthread.cpp
@@ -49,7 +49,7 @@
 
 #include <cctype>
 
-#ifdef QQNXSCREENEVENTTHREAD_DEBUG
+#if defined(QQNXSCREENEVENTTHREAD_DEBUG)
 #define qScreenEventThreadDebug qDebug
 #else
 #define qScreenEventThreadDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxtheme.cpp b/src/plugins/platforms/qnx/qqnxtheme.cpp
index e8e9e39388..733b7223b6 100644
--- a/src/plugins/platforms/qnx/qqnxtheme.cpp
+++ b/src/plugins/platforms/qnx/qqnxtheme.cpp
@@ -80,10 +80,10 @@ QPlatformDialogHelper *QQnxTheme::createPlatformDialogHelper(DialogType type) co
     case QPlatformTheme::FileDialog:
         return new QQnxFileDialogHelper(m_integration);
 #endif
-#ifndef QT_NO_COLORDIALOG
+#if !defined(QT_NO_COLORDIALOG)
     case QPlatformTheme::ColorDialog:
 #endif
-#ifndef QT_NO_FONTDIALOG
+#if !defined(QT_NO_FONTDIALOG)
     case QPlatformTheme::FontDialog:
 #endif
     default:
diff --git a/src/plugins/platforms/qnx/qqnxvirtualkeyboardbps.cpp b/src/plugins/platforms/qnx/qqnxvirtualkeyboardbps.cpp
index 3d2f49aa6c..11eb4a5082 100644
--- a/src/plugins/platforms/qnx/qqnxvirtualkeyboardbps.cpp
+++ b/src/plugins/platforms/qnx/qqnxvirtualkeyboardbps.cpp
@@ -47,7 +47,7 @@
 #include <bps/locale.h>
 #include <bps/virtualkeyboard.h>
 
-#ifdef QQNXVIRTUALKEYBOARD_DEBUG
+#if defined(QQNXVIRTUALKEYBOARD_DEBUG)
 #define qVirtualKeyboardDebug qDebug
 #else
 #define qVirtualKeyboardDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxvirtualkeyboardpps.cpp b/src/plugins/platforms/qnx/qqnxvirtualkeyboardpps.cpp
index ab912927bb..e810b47c22 100644
--- a/src/plugins/platforms/qnx/qqnxvirtualkeyboardpps.cpp
+++ b/src/plugins/platforms/qnx/qqnxvirtualkeyboardpps.cpp
@@ -56,7 +56,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#ifdef QQNXVIRTUALKEYBOARD_DEBUG
+#if defined(QQNXVIRTUALKEYBOARD_DEBUG)
 #define qVirtualKeyboardDebug qDebug
 #else
 #define qVirtualKeyboardDebug QT_NO_QDEBUG_MACRO
diff --git a/src/plugins/platforms/qnx/qqnxvirtualkeyboardpps.h b/src/plugins/platforms/qnx/qqnxvirtualkeyboardpps.h
index eb41b2efd0..6048868b08 100644
--- a/src/plugins/platforms/qnx/qqnxvirtualkeyboardpps.h
+++ b/src/plugins/platforms/qnx/qqnxvirtualkeyboardpps.h
@@ -39,8 +39,8 @@
 **
 ****************************************************************************/
 
-#ifndef VIRTUALKEYBOARDPPS_H_
-#define VIRTUALKEYBOARDPPS_H_
+#ifndef VIRTUALKEYBOARDPPS_H
+#define VIRTUALKEYBOARDPPS_H
 
 #include "qqnxabstractvirtualkeyboard.h"
 
@@ -97,4 +97,4 @@ private:
     static const size_t ms_bufferSize;
 };
 
-#endif /* VIRTUALKEYBOARDPPS_H_ */
+#endif // VIRTUALKEYBOARDPPS_H
diff --git a/src/plugins/platforms/qnx/qqnxwindow.cpp b/src/plugins/platforms/qnx/qqnxwindow.cpp
index 51435a1e55..f1bebee9b2 100644
--- a/src/plugins/platforms/qnx/qqnxwindow.cpp
+++ b/src/plugins/platforms/qnx/qqnxwindow.cpp
@@ -40,7 +40,7 @@
 ****************************************************************************/
 
 #include "qqnxwindow.h"
-#ifndef QT_NO_OPENGL
+#if !defined(QT_NO_OPENGL)
 #include "qqnxglcontext.h"
 #endif
 #include "qqnxintegration.h"
@@ -53,12 +53,12 @@
 
 #include <errno.h>
 
-#ifdef Q_OS_BLACKBERRY
+#if defined(Q_OS_BLACKBERRY)
 #include <sys/pps.h>
 #include <bps/navigator.h>
 #endif
 
-#ifdef QQNXWINDOW_DEBUG
+#if defined(QQNXWINDOW_DEBUG)
 #define qWindowDebug qDebug
 #else
 #define qWindowDebug QT_NO_QDEBUG_MACRO
@@ -72,7 +72,7 @@ QQnxWindow::QQnxWindow(QWindow *window, screen_context_t context)
       m_window(0),
       m_currentBufferIndex(-1),
       m_previousBufferIndex(-1),
-#ifndef QT_NO_OPENGL
+#if !defined(QT_NO_OPENGL)
       m_platformOpenGLContext(0),
 #endif
       m_screen(0),
@@ -353,7 +353,7 @@ void QQnxWindow::setBufferSize(const QSize &size)
 
     // Create window buffers if they do not exist
     if (m_bufferSize.isEmpty()) {
-#ifndef QT_NO_OPENGL
+#if !defined(QT_NO_OPENGL)
         // Get pixel format from EGL config if using OpenGL;
         // otherwise inherit pixel format of window's screen
         if (m_platformOpenGLContext != 0) {
@@ -666,7 +666,7 @@ void QQnxWindow::gainedFocus()
     QWindowSystemInterface::handleWindowActivated(window());
 }
 
-#ifndef QT_NO_OPENGL
+#if !defined(QT_NO_OPENGL)
 void QQnxWindow::setPlatformOpenGLContext(QQnxGLContext *platformOpenGLContext)
 {
     // This function does not take ownership of the platform gl context.
diff --git a/src/plugins/platforms/qnx/qqnxwindow.h b/src/plugins/platforms/qnx/qqnxwindow.h
index ad136227e3..4a327fd54b 100644
--- a/src/plugins/platforms/qnx/qqnxwindow.h
+++ b/src/plugins/platforms/qnx/qqnxwindow.h
@@ -49,7 +49,7 @@
 #include <QtGui/QImage>
 #include <QtCore/QMutex>
 
-#ifndef QT_NO_OPENGL
+#if !defined(QT_NO_OPENGL)
 #include <EGL/egl.h>
 #endif
 
@@ -60,7 +60,7 @@ QT_BEGIN_NAMESPACE
 // all surfaces double buffered
 #define MAX_BUFFER_COUNT    2
 
-#ifndef QT_NO_OPENGL
+#if !defined(QT_NO_OPENGL)
 class QQnxGLContext;
 #endif
 class QQnxScreen;
@@ -108,7 +108,7 @@ public:
     QQnxScreen *screen() const { return m_screen; }
     const QList<QQnxWindow*>& children() const { return m_childWindows; }
 
-#ifndef QT_NO_OPENGL
+#if !defined(QT_NO_OPENGL)
     void setPlatformOpenGLContext(QQnxGLContext *platformOpenGLContext);
     QQnxGLContext *platformOpenGLContext() const { return m_platformOpenGLContext; }
 #endif
@@ -144,7 +144,7 @@ private:
     QRegion m_previousDirty;
     QRegion m_scrolled;
 
-#ifndef QT_NO_OPENGL
+#if !defined(QT_NO_OPENGL)
     QQnxGLContext *m_platformOpenGLContext;
 #endif
     QQnxScreen *m_screen;