diff --git a/src/gui/kernel/qplatformsystemtrayicon.cpp b/src/gui/kernel/qplatformsystemtrayicon.cpp
index 7bc61e6e6e..ae87805856 100644
--- a/src/gui/kernel/qplatformsystemtrayicon.cpp
+++ b/src/gui/kernel/qplatformsystemtrayicon.cpp
@@ -118,7 +118,7 @@ QPlatformSystemTrayIcon::~QPlatformSystemTrayIcon()
 */
 
 /*!
-    \fn void QPlatformSystemTrayIcon::showMessage(const QString &msg, const QString &title,
+    \fn void QPlatformSystemTrayIcon::showMessage(const QString &title, const QString &msg,
                                                   const QIcon &icon, MessageIcon iconType, int secs)
     Shows a balloon message for the entry with the given \a title, message \a msg and \a icon for
     the time specified in \a secs. \a iconType is used as a hint for the implementing platform.
diff --git a/src/gui/kernel/qplatformsystemtrayicon.h b/src/gui/kernel/qplatformsystemtrayicon.h
index 499b5fca17..9bbaf5e9ca 100644
--- a/src/gui/kernel/qplatformsystemtrayicon.h
+++ b/src/gui/kernel/qplatformsystemtrayicon.h
@@ -69,7 +69,7 @@ public:
     virtual void updateToolTip(const QString &tooltip) = 0;
     virtual void updateMenu(QPlatformMenu *menu) = 0;
     virtual QRect geometry() const = 0;
-    virtual void showMessage(const QString &msg, const QString &title,
+    virtual void showMessage(const QString &title, const QString &msg,
                              const QIcon &icon, MessageIcon iconType, int secs) = 0;
 
     virtual bool isSystemTrayAvailable() const = 0;
diff --git a/src/plugins/platforms/cocoa/qcocoasystemtrayicon.h b/src/plugins/platforms/cocoa/qcocoasystemtrayicon.h
index c527c478ff..c426cacc35 100755
--- a/src/plugins/platforms/cocoa/qcocoasystemtrayicon.h
+++ b/src/plugins/platforms/cocoa/qcocoasystemtrayicon.h
@@ -57,7 +57,7 @@ public:
     virtual void updateToolTip(const QString &toolTip);
     virtual void updateMenu(QPlatformMenu *menu);
     virtual QRect geometry() const;
-    virtual void showMessage(const QString &msg, const QString &title,
+    virtual void showMessage(const QString &title, const QString &msg,
                              const QIcon& icon, MessageIcon iconType, int secs);
 
     virtual bool isSystemTrayAvailable() const;
diff --git a/src/widgets/util/qsystemtrayicon.cpp b/src/widgets/util/qsystemtrayicon.cpp
index 7d04cab05e..30ef7e82e5 100644
--- a/src/widgets/util/qsystemtrayicon.cpp
+++ b/src/widgets/util/qsystemtrayicon.cpp
@@ -718,8 +718,8 @@ void QSystemTrayIconPrivate::updateToolTip_sys_qpa()
     qpa_sys->updateToolTip(toolTip);
 }
 
-void QSystemTrayIconPrivate::showMessage_sys_qpa(const QString &message,
-                                                 const QString &title,
+void QSystemTrayIconPrivate::showMessage_sys_qpa(const QString &title,
+                                                 const QString &message,
                                                  QSystemTrayIcon::MessageIcon icon,
                                                  int msecs)
 {
@@ -737,7 +737,7 @@ void QSystemTrayIconPrivate::showMessage_sys_qpa(const QString &message,
     default:
         break;
     }
-    qpa_sys->showMessage(message, title, notificationIcon,
+    qpa_sys->showMessage(title, message, notificationIcon,
                      static_cast<QPlatformSystemTrayIcon::MessageIcon>(icon), msecs);
 }
 
diff --git a/src/widgets/util/qsystemtrayicon_p.h b/src/widgets/util/qsystemtrayicon_p.h
index ce88313707..fdf91d4c43 100644
--- a/src/widgets/util/qsystemtrayicon_p.h
+++ b/src/widgets/util/qsystemtrayicon_p.h
@@ -77,7 +77,7 @@ public:
     void updateToolTip_sys();
     void updateMenu_sys();
     QRect geometry_sys() const;
-    void showMessage_sys(const QString &msg, const QString &title, QSystemTrayIcon::MessageIcon icon, int secs);
+    void showMessage_sys(const QString &title, const QString &msg, QSystemTrayIcon::MessageIcon icon, int secs);
 
     static bool isSystemTrayAvailable_sys();
     static bool supportsMessages_sys();
@@ -98,7 +98,7 @@ private:
     void updateToolTip_sys_qpa();
     void updateMenu_sys_qpa();
     QRect geometry_sys_qpa() const;
-    void showMessage_sys_qpa(const QString &msg, const QString &title, QSystemTrayIcon::MessageIcon icon, int secs);
+    void showMessage_sys_qpa(const QString &title, const QString &msg, QSystemTrayIcon::MessageIcon icon, int secs);
 };
 
 class QBalloonTip : public QWidget
diff --git a/src/widgets/util/qsystemtrayicon_qpa.cpp b/src/widgets/util/qsystemtrayicon_qpa.cpp
index 08764b405d..7dc848d3ab 100644
--- a/src/widgets/util/qsystemtrayicon_qpa.cpp
+++ b/src/widgets/util/qsystemtrayicon_qpa.cpp
@@ -111,13 +111,11 @@ bool QSystemTrayIconPrivate::supportsMessages_sys()
         return false;
 }
 
-void QSystemTrayIconPrivate::showMessage_sys(const QString &message,
-                                             const QString &title,
-                                             QSystemTrayIcon::MessageIcon icon,
-                                             int msecs)
+void QSystemTrayIconPrivate::showMessage_sys(const QString &title, const QString &message,
+                                             QSystemTrayIcon::MessageIcon icon, int msecs)
 {
     if (qpa_sys)
-        showMessage_sys_qpa(message, title, icon, msecs);
+        showMessage_sys_qpa(title, message, icon, msecs);
 }
 
 QT_END_NAMESPACE
diff --git a/src/widgets/util/qsystemtrayicon_x11.cpp b/src/widgets/util/qsystemtrayicon_x11.cpp
index 8fbbc96f6c..eee100d279 100644
--- a/src/widgets/util/qsystemtrayicon_x11.cpp
+++ b/src/widgets/util/qsystemtrayicon_x11.cpp
@@ -341,11 +341,11 @@ bool QSystemTrayIconPrivate::supportsMessages_sys()
     return true;
 }
 
-void QSystemTrayIconPrivate::showMessage_sys(const QString &message, const QString &title,
+void QSystemTrayIconPrivate::showMessage_sys(const QString &title, const QString &message,
                                    QSystemTrayIcon::MessageIcon icon, int msecs)
 {
     if (qpa_sys) {
-        showMessage_sys_qpa(message, title, icon, msecs);
+        showMessage_sys_qpa(title, message, icon, msecs);
         return;
     }
     if (!sys)