1 files changed, 2 insertions, 2 deletions
diff --git a/src/plugins/platforms/windows/qwindowssystemtrayicon.cpp b/src/plugins/platforms/windows/qwindowssystemtrayicon.cpp
index ab830e1461..53562c87dd 100644
--- a/src/plugins/platforms/windows/qwindowssystemtrayicon.cpp
+++ b/src/plugins/platforms/windows/qwindowssystemtrayicon.cpp
@@ -168,7 +168,7 @@ static inline HWND createTrayIconMessageWindow()
         return nullptr;
     // Register window class in the platform plugin.
     const QString className =
-        ctx->registerWindowClass(QStringLiteral("QTrayIconMessageWindowClass"),
+        ctx->registerWindowClass(QWindowsContext::classNamePrefix() + QStringLiteral("TrayIconMessageWindowClass"),
                                  qWindowsTrayIconWndProc);
     const wchar_t windowName[] = L"QTrayIconMessageWindow";
     return CreateWindowEx(0, reinterpret_cast<const wchar_t *>(className.utf16()),
@@ -261,7 +261,7 @@ void QWindowsSystemTrayIcon::showMessage(const QString &title, const QString &me
     // For empty messages, ensures that they show when only title is set
     QString message = messageIn;
     if (message.isEmpty() && !title.isEmpty())
-        message.append(QLatin1Char(' '));
+        message.append(u' ');
 
     NOTIFYICONDATA tnd;
     initNotifyIconData(tnd);