diff --git a/src/Eto.Wpf/Forms/Controls/ScrollableHandler.cs b/src/Eto.Wpf/Forms/Controls/ScrollableHandler.cs
index 115ff68e8..1a3f4f53d 100755
--- a/src/Eto.Wpf/Forms/Controls/ScrollableHandler.cs
+++ b/src/Eto.Wpf/Forms/Controls/ScrollableHandler.cs
@@ -217,5 +217,11 @@ public bool ExpandContentHeight
 		public float MinimumZoom { get { return 1f; } set { } }
 
 		public float Zoom { get { return 1f; } set { } }
+
+		public override void OnChildPreferredSizeUpdated()
+		{
+			base.OnChildPreferredSizeUpdated();
+			UpdateScrollSizes();
+		}
 	}
 }