diff --git a/com.unity.render-pipelines.high-definition/CHANGELOG.md b/com.unity.render-pipelines.high-definition/CHANGELOG.md
index 173b6bc51c6..cbd396bb6a5 100644
--- a/com.unity.render-pipelines.high-definition/CHANGELOG.md
+++ b/com.unity.render-pipelines.high-definition/CHANGELOG.md
@@ -32,6 +32,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed missing include guards in shadow hlsl files.
 - Fixed issue with light layers bigger than 8 (and above the supported range). 
 - Fixed an issue where decals were duplicated in prefab isolation mode.
+- Fixed issue with light layers bigger than 8 (and above the supported range).
+- Fixed the valid TRS test failing due to variable not being initialized to the identity matrix in RTShadows (1220600).
 
 ### Changed
 - Shadowmask and realtime reflection probe property are hide in Quality settings
diff --git a/com.unity.render-pipelines.high-definition/Runtime/Lighting/Light/HDAdditionalLightData.cs b/com.unity.render-pipelines.high-definition/Runtime/Lighting/Light/HDAdditionalLightData.cs
index 13a317b27d4..b9b8ffe8124 100644
--- a/com.unity.render-pipelines.high-definition/Runtime/Lighting/Light/HDAdditionalLightData.cs
+++ b/com.unity.render-pipelines.high-definition/Runtime/Lighting/Light/HDAdditionalLightData.cs
@@ -1430,7 +1430,7 @@ internal int shadowPrecision
         Plane[]             m_ShadowFrustumPlanes = new Plane[6];
 
         // temporary matrix that stores the previous light data (mainly used to discard history for ray traced screen space shadows)
-        [System.NonSerialized] internal Matrix4x4 previousTransform = new Matrix4x4();
+        [System.NonSerialized] internal Matrix4x4 previousTransform = Matrix4x4.identity;
         // Temporary index that stores the current shadow index for the light
         [System.NonSerialized] internal int shadowIndex = -1;