diff --git a/src/widgets/util/qsystemtrayicon.cpp b/src/widgets/util/qsystemtrayicon.cpp
index 08b24a8200d..79ca0a5bdb1 100644
--- a/src/widgets/util/qsystemtrayicon.cpp
+++ b/src/widgets/util/qsystemtrayicon.cpp
@@ -380,6 +380,8 @@ bool QSystemTrayIcon::supportsMessages()
     On Mac OS X, the Growl notification system must be installed for this function to
     display messages.
 
+    Has been turned into a slot in Qt 5.2.
+
     \sa show(), supportsMessages()
   */
 void QSystemTrayIcon::showMessage(const QString& title, const QString& msg,
diff --git a/src/widgets/util/qsystemtrayicon.h b/src/widgets/util/qsystemtrayicon.h
index 278efae586c..d6ba553a3ab 100644
--- a/src/widgets/util/qsystemtrayicon.h
+++ b/src/widgets/util/qsystemtrayicon.h
@@ -94,8 +94,6 @@ public:
     static bool supportsMessages();
 
     enum MessageIcon { NoIcon, Information, Warning, Critical };
-    void showMessage(const QString &title, const QString &msg,
-                     MessageIcon icon = Information, int msecs = 10000);
 
     QRect geometry() const;
     bool isVisible() const;
@@ -104,6 +102,8 @@ public Q_SLOTS:
     void setVisible(bool visible);
     inline void show() { setVisible(true); }
     inline void hide() { setVisible(false); }
+    void showMessage(const QString &title, const QString &msg,
+                     QSystemTrayIcon::MessageIcon icon = QSystemTrayIcon::Information, int msecs = 10000);
 
 Q_SIGNALS:
     void activated(QSystemTrayIcon::ActivationReason reason);