diff --git a/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/AgentFrameworkResponseHandler.cs b/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/AgentFrameworkResponseHandler.cs
index acb8e9c556..3423a0b4a3 100644
--- a/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/AgentFrameworkResponseHandler.cs
+++ b/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/AgentFrameworkResponseHandler.cs
@@ -1,10 +1,9 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 using System.Threading;
-using System.Threading.Tasks;
 using Azure.AI.AgentServer.Responses;
 using Azure.AI.AgentServer.Responses.Models;
 using Microsoft.Extensions.AI;
@@ -151,7 +150,10 @@ public class AgentFrameworkResponseHandler : ResponseHandler
                 return agent;
             }
 
-            this._logger.LogWarning("Agent '{AgentName}' not found in keyed services. Attempting default resolution.", agentName);
+            if (this._logger.IsEnabled(LogLevel.Warning))
+            {
+                this._logger.LogWarning("Agent '{AgentName}' not found in keyed services. Attempting default resolution.", agentName);
+            }
         }
 
         // Try non-keyed default
diff --git a/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/InputConverter.cs b/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/InputConverter.cs
index 49bd216a90..e6d607c793 100644
--- a/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/InputConverter.cs
+++ b/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/InputConverter.cs
@@ -1,9 +1,8 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
-using System.Linq;
 using System.Text.Json;
 using Azure.AI.AgentServer.Responses.Models;
 using Microsoft.Extensions.AI;
diff --git a/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/OutputConverter.cs b/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/OutputConverter.cs
index 1fd6672c83..79aaf768d9 100644
--- a/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/OutputConverter.cs
+++ b/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/OutputConverter.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using System.Collections.Generic;
diff --git a/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/ServiceCollectionExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/ServiceCollectionExtensions.cs
index bae8821745..d8e8a83f29 100644
--- a/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/ServiceCollectionExtensions.cs
+++ b/dotnet/src/Microsoft.Agents.AI.Foundry/Hosting/ServiceCollectionExtensions.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using Azure.AI.AgentServer.Responses;