diff --git a/src/declarativeimports/plasmacomponents/qml/Slider.qml b/src/declarativeimports/plasmacomponents/qml/Slider.qml
index 5eb69fe2c..07b56ef9c 100644
--- a/src/declarativeimports/plasmacomponents/qml/Slider.qml
+++ b/src/declarativeimports/plasmacomponents/qml/Slider.qml
@@ -46,8 +46,8 @@ QtControls.Slider {
      */
     property bool inverted: false
 
-    width: slider.isVertical ? PlasmaCore.Theme.mSize(PlasmaCore.Theme.defaultFont).height*1.6 : 200
-    height: slider.isVertical ? 200 : PlasmaCore.Theme.mSize(PlasmaCore.Theme.defaultFont).height*1.6
+    implicitWidth: slider.isVertical ? PlasmaCore.Theme.mSize(PlasmaCore.Theme.defaultFont).height*1.6 : 200
+    implicitHeight: slider.isVertical ? 200 : PlasmaCore.Theme.mSize(PlasmaCore.Theme.defaultFont).height*1.6
     // TODO: needs to define if there will be specific graphics for
     //     disabled sliders
     opacity: enabled ? 1.0 : 0.5