diff --git a/private/style.cpp b/private/style.cpp
index 9de800f6e..d471ab8bd 100644
--- a/private/style.cpp
+++ b/private/style.cpp
@@ -137,6 +137,22 @@ void Style::drawComplexControl(ComplexControl control,
     painter->restore();
 }
 
+int Style::pixelMetric(PixelMetric metric, const QStyleOption *option, const QWidget *widget) const
+{
+    switch (metric) {
+    case PM_ScrollBarExtent: {
+        const QStyleOptionSlider *scrollOption = qstyleoption_cast<const QStyleOptionSlider *>(option);
+        if (scrollOption && scrollOption->orientation == Qt::Vertical) {
+            return d->scrollbar->elementSize("arrow-down").width() + 2;
+        } else {
+            return d->scrollbar->elementSize("arrow-left").height() + 2;
+        }
+    }
+    default:
+        return QCommonStyle::pixelMetric(metric, option, widget);
+    }
+}
+
 }
 
 #include "style_p.moc"
diff --git a/private/style_p.h b/private/style_p.h
index dbd0fb790..c2dc2ea9c 100644
--- a/private/style_p.h
+++ b/private/style_p.h
@@ -41,6 +41,8 @@ protected:
                             const QStyleOptionComplex *option,
                             QPainter *painter,
                             const QWidget *widget) const;
+
+    int pixelMetric(PixelMetric metric, const QStyleOption *option = 0, const QWidget *widget = 0) const;
 private:
     StylePrivate *d;
 };
diff --git a/widgets/scrollbar.cpp b/widgets/scrollbar.cpp
index e359d87da..b1dd0697d 100644
--- a/widgets/scrollbar.cpp
+++ b/widgets/scrollbar.cpp
@@ -40,6 +40,8 @@ ScrollBar::ScrollBar(Qt::Orientation orientation, QGraphicsWidget *parent)
    setWidget(scrollbar);
    d->style = new Plasma::Style();
    scrollbar->setStyle(d->style);
+
+   scrollbar->resize(scrollbar->sizeHint());
 }
 
 ScrollBar::~ScrollBar()