diff --git a/shell/agents/Microsoft.Azure.Agent/ChatSession.cs b/shell/agents/Microsoft.Azure.Agent/ChatSession.cs
index afe88f15..c0156903 100644
--- a/shell/agents/Microsoft.Azure.Agent/ChatSession.cs
+++ b/shell/agents/Microsoft.Azure.Agent/ChatSession.cs
@@ -132,8 +132,9 @@ private async Task<string> SetupNewChat(IStatusContext context, CancellationToke
         }
         catch (Exception e)
         {
-            if (e is not OperationCanceledException and TokenRequestException)
+            if (e is not OperationCanceledException and not TokenRequestException)
             {
+                // Trace a telemetry for any unexpected error.
                 Telemetry.Trace(AzTrace.Exception("Failed to setup a new chat session."), e);
             }