diff --git a/src/widgets/styles/qwindowsvistastyle.cpp b/src/widgets/styles/qwindowsvistastyle.cpp
index 09aec2f484..252740cbab 100644
--- a/src/widgets/styles/qwindowsvistastyle.cpp
+++ b/src/widgets/styles/qwindowsvistastyle.cpp
@@ -1010,12 +1010,12 @@ void QWindowsVistaStyle::drawControl(ControlElement element, const QStyleOption
                             QPainter startPainter(&startImage);
                             stateId = PBS_DEFAULTED;
                             XPThemeData theme(widget, &startPainter, name, partId, stateId, rect);
-                            d->drawBackground(theme);
+                            d->drawBackground(theme, true); // Do not draw on HDC of backing store.
 
                             QPainter alternatePainter(&alternateImage);
                             theme.stateId = PBS_DEFAULTED_ANIMATING;
                             theme.painter = &alternatePainter;
-                            d->drawBackground(theme);
+                            d->drawBackground(theme, true); // Do not draw on HDC of backing store.
                             pulse->setPrimaryImage(startImage);
                             pulse->setAlternateImage(alternateImage);
                             pulse->setStartTime(QTime::currentTime());
diff --git a/src/widgets/styles/qwindowsxpstyle.cpp b/src/widgets/styles/qwindowsxpstyle.cpp
index eaeb336a61..c112e62c6c 100644
--- a/src/widgets/styles/qwindowsxpstyle.cpp
+++ b/src/widgets/styles/qwindowsxpstyle.cpp
@@ -665,7 +665,7 @@ bool QWindowsXPStylePrivate::swapAlphaChannel(const QRect &rect, bool allPixels)
             - Theme part is flipped (mirrored horizontally)
         else use drawBackgroundDirectly().
 */
-void QWindowsXPStylePrivate::drawBackground(XPThemeData &themeData)
+void QWindowsXPStylePrivate::drawBackground(XPThemeData &themeData, bool forceFallback)
 {
     if (themeData.rect.isEmpty())
         return;
@@ -693,14 +693,13 @@ void QWindowsXPStylePrivate::drawBackground(XPThemeData &themeData)
         dc = static_cast<HDC>(nativeInterface->nativeResourceForBackingStore("getDC", backingStore ));
     }
 
-    bool useFallback = dc == 0
+    const bool useFallback = forceFallback || dc == 0
                        || painter->opacity() != 1.0
                        || themeData.rotate
                        || complexXForm
                        || themeData.mirrorVertically
                        || (themeData.mirrorHorizontally && pDrawThemeBackgroundEx == 0)
                        || translucentToplevel;
-
     if (!useFallback)
         drawBackgroundDirectly(themeData);
     else
diff --git a/src/widgets/styles/qwindowsxpstyle_p.h b/src/widgets/styles/qwindowsxpstyle_p.h
index 154fe3386c..44dc8e8bdb 100644
--- a/src/widgets/styles/qwindowsxpstyle_p.h
+++ b/src/widgets/styles/qwindowsxpstyle_p.h
@@ -312,7 +312,7 @@ public:
     QRegion region(XPThemeData &themeData);
 
     void setTransparency(QWidget *widget, XPThemeData &themeData);
-    void drawBackground(XPThemeData &themeData);
+    void drawBackground(XPThemeData &themeData, bool forceFallback = false);
     void drawBackgroundThruNativeBuffer(XPThemeData &themeData);
     void drawBackgroundDirectly(XPThemeData &themeData);