diff --git a/src/plugins/platforms/windows/qwindowswindow.cpp b/src/plugins/platforms/windows/qwindowswindow.cpp
index c26e3bc1a8..323456bcc4 100644
--- a/src/plugins/platforms/windows/qwindowswindow.cpp
+++ b/src/plugins/platforms/windows/qwindowswindow.cpp
@@ -31,7 +31,6 @@
 #include <private/qguiapplication_p.h>
 #include <private/qhighdpiscaling_p.h>
 #include <qpa/qwindowsysteminterface.h>
-#include <qpa/qplatformtheme.h>
 
 #include <QtCore/qdebug.h>
 #include <QtCore/qlibraryinfo.h>
@@ -2344,23 +2343,9 @@ static inline bool isSoftwareGl()
 }
 
 bool QWindowsWindow::handleWmPaint(HWND hwnd, UINT message,
-                                   WPARAM wParam, LPARAM, LRESULT *result)
+                                         WPARAM, LPARAM, LRESULT *result)
 {
     if (message == WM_ERASEBKGND) { // Backing store - ignored.
-        if (!m_firstBgDraw) {
-            // Get window background from the default palette; this will
-            // usually be the system background color.
-            const QColor bgColor = QGuiApplication::palette().color(QPalette::Window);
-            HBRUSH bgBrush = CreateSolidBrush(RGB(bgColor.red(), bgColor.green(), bgColor.blue()));
-            // Fill rectangle with system background color
-            RECT rc;
-            auto hdc = reinterpret_cast<HDC>(wParam);
-            GetClientRect(hwnd, &rc);
-            FillRect(hdc, &rc, bgBrush);
-            DeleteObject(bgBrush);
-            // Brush the window with system background color only for first time
-            m_firstBgDraw = true;
-        }
         *result = 1;
         return true;
     }
diff --git a/src/plugins/platforms/windows/qwindowswindow.h b/src/plugins/platforms/windows/qwindowswindow.h
index 38e9fb9a5b..3404eebf22 100644
--- a/src/plugins/platforms/windows/qwindowswindow.h
+++ b/src/plugins/platforms/windows/qwindowswindow.h
@@ -377,7 +377,6 @@ private:
     HICON m_iconBig = nullptr;
     void *m_surface = nullptr;
     int m_savedDpi = 96;
-    bool m_firstBgDraw = false;
 
     static bool m_screenForGLInitialized;