diff --git a/src/Uno.Toolkit.Skia.WinUI/Controls/Shadows/ShadowContainer.Paint.cs b/src/Uno.Toolkit.Skia.WinUI/Controls/Shadows/ShadowContainer.Paint.cs
index cf91d3c87..7eee761a2 100644
--- a/src/Uno.Toolkit.Skia.WinUI/Controls/Shadows/ShadowContainer.Paint.cs
+++ b/src/Uno.Toolkit.Skia.WinUI/Controls/Shadows/ShadowContainer.Paint.cs
@@ -72,7 +72,7 @@ private void OnSurfacePainted(object? sender, SKPaintSurfaceEventArgs e)
 		using var _ = canvas.SnapshotState();
 
 		var key =
-			FormattableString.Invariant($"[{contentAsFE.ActualWidth}x{contentAsFE.ActualHeight},{background}]: ") +
+			FormattableString.Invariant($"[{contentAsFE.ActualWidth}x{contentAsFE.ActualHeight},{background},{shape}]: ") +
 			string.Join("; ", state.Shadows.Select(x => x.ToKey()));
 		if (Cache.TryGetValue(key, out var snapshot))
 		{