diff --git a/src/apps/mediaplayer/interface/SeekSlider.cpp b/src/apps/mediaplayer/interface/SeekSlider.cpp
index e455b56b9c..b0e5fa58f6 100644
--- a/src/apps/mediaplayer/interface/SeekSlider.cpp
+++ b/src/apps/mediaplayer/interface/SeekSlider.cpp
@@ -386,6 +386,6 @@ SeekSlider::_SetKnobPosition(int32 knobPos)
 
 	newKnob.left = fKnobPos - knobWidth2;
 	newKnob.right = fKnobPos + knobWidth2;
-	Invalidate(oldKnob | newKnob);
+	Invalidate((oldKnob | newKnob).InsetBySelf(-1, 0));
 }