--- a/src/gui/util/qsystemtrayicon_p.h	Mon Mar 15 12:43:09 2010 +0200
+++ b/src/gui/util/qsystemtrayicon_p.h	Thu Apr 08 14:19:33 2010 +0300
@@ -164,7 +164,9 @@
     bool x11Event(XEvent *event);
     void mousePressEvent(QMouseEvent *event);
     void mouseDoubleClickEvent(QMouseEvent *event);
+#ifndef QT_NO_WHEELEVENT
     void wheelEvent(QWheelEvent *event);
+#endif
     bool event(QEvent *e);
 
 private: