diff --git a/doc/testplans/pbr_terrain_composition.md b/doc/testplans/pbr_terrain_composition.md
index 0e721c064a359b5cf9cba2dbed43333acae44268..87c1d477800b8e93f4216fc6f43acd969023861b 100644
--- a/doc/testplans/pbr_terrain_composition.md
+++ b/doc/testplans/pbr_terrain_composition.md
@@ -60,6 +60,6 @@ Unlike a viewer without PBR terrain support, the new viewer will no longer treat
 
 ## Graphics Features
 
-Texture terrain with transparency will render as opaque. Parts of the texture that would be partially transparent will instead display as a mix of the color and black, depending on how transparent the texture is.
+Texture terrain with transparency is not permitted to be applied in the viewer.
 
 See [PBR Terrain Appearance](./pbr_terrain_appearance.md) for supported PBR terrain features.