diff --git a/src/plugins/platforms/windows/qwindowswindow.cpp b/src/plugins/platforms/windows/qwindowswindow.cpp
index 5987324ac11..f08375d45f2 100644
--- a/src/plugins/platforms/windows/qwindowswindow.cpp
+++ b/src/plugins/platforms/windows/qwindowswindow.cpp
@@ -2125,8 +2125,7 @@ bool QWindowsWindow::handleWmPaint(HWND hwnd, UINT message,
     if (!window()->isVisible() && (GetWindowLong(hwnd, GWL_EXSTYLE) & WS_EX_LAYERED) != 0)
         return false;
     // Ignore invalid update bounding rectangles
-    RECT updateRect;
-    if (!GetUpdateRect(m_data.hwnd, &updateRect, FALSE))
+    if (!GetUpdateRect(m_data.hwnd, 0, FALSE))
         return false;
     PAINTSTRUCT ps;
 
@@ -2148,7 +2147,7 @@ bool QWindowsWindow::handleWmPaint(HWND hwnd, UINT message,
     // we still need to send isExposed=true, for compatibility.
     // Our tests depend on it.
     fireExpose(QRegion(qrectFromRECT(ps.rcPaint)), true);
-    if (qSizeOfRect(updateRect) == m_data.geometry.size() && !QWindowsContext::instance()->asyncExpose())
+    if (!QWindowsContext::instance()->asyncExpose())
         QWindowSystemInterface::flushWindowSystemEvents(QEventLoop::ExcludeUserInputEvents);
 
     EndPaint(hwnd, &ps);