diff --git a/com.unity.render-pipelines.high-definition/CHANGELOG.md b/com.unity.render-pipelines.high-definition/CHANGELOG.md
index 358ee147c47..17c57ca6cb0 100644
--- a/com.unity.render-pipelines.high-definition/CHANGELOG.md
+++ b/com.unity.render-pipelines.high-definition/CHANGELOG.md
@@ -673,6 +673,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed compile error in PS4 for planar reflection filtering.
 - Fixed issue with blue line in prefabs for volume mode.
 - Fixing the internsity being applied to RTAO too early leading to unexpected results (1254626).
+- Fix issue that caused sky to incorrectly render when using a custom projection matrix.
 
 ### Changed
 - Improve MIP selection for decals on Transparents
diff --git a/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/Camera/HDCamera.cs b/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/Camera/HDCamera.cs
index e75b23d663c..e7fb67e6ed7 100644
--- a/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/Camera/HDCamera.cs
+++ b/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/Camera/HDCamera.cs
@@ -1275,6 +1275,10 @@ Matrix4x4 ComputePixelCoordToWorldSpaceViewDirectionMatrix(ViewConstants viewCon
             }
 
             float verticalFoV = camera.GetGateFittedFieldOfView() * Mathf.Deg2Rad;
+            if (!camera.usePhysicalProperties)
+            {
+                verticalFoV = Mathf.Atan(-1.0f / viewConstants.projMatrix[1, 1]) * 2;
+            }
             Vector2 lensShift = camera.GetGateFittedLensShift();
 
             return HDUtils.ComputePixelCoordToWorldSpaceViewDirectionMatrix(verticalFoV, lensShift, resolution, viewConstants.viewMatrix, false, aspect);