diff --git a/src/st/st-viewport.c b/src/st/st-viewport.c
index e2593196e..96b703b14 100644
--- a/src/st/st-viewport.c
+++ b/src/st/st-viewport.c
@@ -81,6 +81,7 @@ adjustment_value_notify_cb (StAdjustment *adjustment,
                             StViewport   *viewport)
 {
   clutter_actor_invalidate_transform (CLUTTER_ACTOR (viewport));
+  clutter_actor_invalidate_paint_volume (CLUTTER_ACTOR (viewport));
   clutter_actor_queue_relayout (CLUTTER_ACTOR (viewport));
 }