diff --git a/src/widgets/util/qsystemtrayicon_qpa.cpp b/src/widgets/util/qsystemtrayicon_qpa.cpp
index f2b0819132..9694e0a6b3 100644
--- a/src/widgets/util/qsystemtrayicon_qpa.cpp
+++ b/src/widgets/util/qsystemtrayicon_qpa.cpp
@@ -53,7 +53,7 @@ QT_BEGIN_NAMESPACE
 
 QSystemTrayIconPrivate::QSystemTrayIconPrivate()
     : qpa_sys(QGuiApplicationPrivate::platformTheme()->createPlatformSystemTrayIcon())
-    , visible(false)
+    , visible(false), trayWatcher(nullptr)
 {
 }