diff --git a/dotnet/samples/05-end-to-end/AgentWebChat/AgentWebChat.AgentHost/Program.cs b/dotnet/samples/05-end-to-end/AgentWebChat/AgentWebChat.AgentHost/Program.cs
index c18dbad3a4..ff98f8d230 100644
--- a/dotnet/samples/05-end-to-end/AgentWebChat/AgentWebChat.AgentHost/Program.cs
+++ b/dotnet/samples/05-end-to-end/AgentWebChat/AgentWebChat.AgentHost/Program.cs
@@ -1,6 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.
 
-using A2A;
 using A2A.AspNetCore;
 using AgentWebChat.AgentHost;
 using AgentWebChat.AgentHost.Custom;