diff --git a/dotnet/src/Microsoft.Agents.AI.DevUI/DevUIExtensions.cs b/dotnet/src/Microsoft.Agents.AI.DevUI/DevUIExtensions.cs
index 4a85de121a..2162ce3ac7 100644
--- a/dotnet/src/Microsoft.Agents.AI.DevUI/DevUIExtensions.cs
+++ b/dotnet/src/Microsoft.Agents.AI.DevUI/DevUIExtensions.cs
@@ -16,7 +16,6 @@ public static IHostApplicationBuilder AddDevUI(this IHostApplicationBuilder buil
     {
         ArgumentNullException.ThrowIfNull(builder);
         builder.Services.AddOpenAIConversations();
-        builder.Services.AddOpenAIResponses();
 
         return builder;
     }
@@ -34,7 +33,6 @@ public static IEndpointConventionBuilder MapDevUI(
         group.MapDevUI(pattern: "/devui");
         group.MapEntities();
         group.MapOpenAIConversations();
-        group.MapOpenAIResponses();
         return group;
     }