diff --git a/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_ForwardPass.azsl b/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_ForwardPass.azsl
index a53dab7a01..8f58c6dd33 100644
--- a/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_ForwardPass.azsl
+++ b/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_ForwardPass.azsl
@@ -153,7 +153,7 @@ struct StandardMaterialInputs
 
     float2 m_vertexUv[UvSetCount];
     float3x3 m_uvMatrix;
-    float m_normal;
+    float3 m_normal;
     float3 m_tangents[UvSetCount];
     float3 m_bitangents[UvSetCount];