diff --git a/thumbnailitem.cpp b/thumbnailitem.cpp
index f19540591d..b402b3244b 100644
--- a/thumbnailitem.cpp
+++ b/thumbnailitem.cpp
@@ -41,6 +41,7 @@ ThumbnailItem::ThumbnailItem(QDeclarativeItem* parent)
     setFlags(flags() & ~QGraphicsItem::ItemHasNoContents);
     if (effects) {
         connect(effects, SIGNAL(windowAdded(KWin::EffectWindow*)), SLOT(effectWindowAdded()));
+        connect(effects, SIGNAL(windowDamaged(KWin::EffectWindow*,QRect)), SLOT(repaint(KWin::EffectWindow*)));
     }
     QTimer::singleShot(0, this, SLOT(init()));
 }
@@ -117,4 +118,11 @@ void ThumbnailItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *opt
                         pixmap);
 }
 
+void ThumbnailItem::repaint(KWin::EffectWindow *w)
+{
+    if (static_cast<KWin::EffectWindowImpl*>(w)->window()->window() == m_wId) {
+        update();
+    }
+}
+
 } // namespace KWin
diff --git a/thumbnailitem.h b/thumbnailitem.h
index 8d39f5fc26..e50c973539 100644
--- a/thumbnailitem.h
+++ b/thumbnailitem.h
@@ -54,6 +54,7 @@ Q_SIGNALS:
 private Q_SLOTS:
     void init();
     void effectWindowAdded();
+    void repaint(KWin::EffectWindow* w);
 private:
     void findParentEffectWindow();
     qulonglong m_wId;