diff --git a/libraries/bxdf/usd_preview_surface.mtlx b/libraries/bxdf/usd_preview_surface.mtlx
index f89e561c3d..b1420745e2 100644
--- a/libraries/bxdf/usd_preview_surface.mtlx
+++ b/libraries/bxdf/usd_preview_surface.mtlx
@@ -50,6 +50,23 @@
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@@ -371,6 +388,41 @@
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diff --git a/resources/Materials/Examples/UsdPreviewSurface/usd_preview_surface_brass_tiled.mtlx b/resources/Materials/Examples/UsdPreviewSurface/usd_preview_surface_brass_tiled.mtlx
index 85f6f3e139..78cce9aad8 100644
--- a/resources/Materials/Examples/UsdPreviewSurface/usd_preview_surface_brass_tiled.mtlx
+++ b/resources/Materials/Examples/UsdPreviewSurface/usd_preview_surface_brass_tiled.mtlx
@@ -20,4 +20,36 @@
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