diff --git a/com.unity.render-pipelines.core/Editor/Debugging/DebugUIDrawer.cs b/com.unity.render-pipelines.core/Editor/Debugging/DebugUIDrawer.cs
index 2dd6c162e83..38845ceeda3 100644
--- a/com.unity.render-pipelines.core/Editor/Debugging/DebugUIDrawer.cs
+++ b/com.unity.render-pipelines.core/Editor/Debugging/DebugUIDrawer.cs
@@ -36,10 +36,12 @@ protected T Cast<T>(object o)
             where T : class
         {
             var casted = o as T;
-            string typeName = o == null ? "null" : o.GetType().ToString();
 
             if (casted == null)
+            {
+                string typeName = o == null ? "null" : o.GetType().ToString();
                 throw new InvalidOperationException("Can't cast " + typeName + " to " + typeof(T));
+            }
 
             return casted;
         }
diff --git a/com.unity.render-pipelines.high-definition/CHANGELOG.md b/com.unity.render-pipelines.high-definition/CHANGELOG.md
index d31f1a2bc1f..2687bc4f62a 100644
--- a/com.unity.render-pipelines.high-definition/CHANGELOG.md
+++ b/com.unity.render-pipelines.high-definition/CHANGELOG.md
@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed a null ref exception in static sky when the default volume profile is invalid.
 - Fixed an error about procedural sky being logged by mistake.
 - Fixed flickering of the game/scene view when lookdev is running.
+- Fixed some GCAlloc in the debug window.
 
 ### Changed
 - Shadowmask and realtime reflection probe property are hide in Quality settings