diff --git a/samples/csharp/end-to-end-apps/Forecasting-Sales/src/eShopDashboard/Startup.cs b/samples/csharp/end-to-end-apps/Forecasting-Sales/src/eShopDashboard/Startup.cs
index 2421912da..fa1681154 100644
--- a/samples/csharp/end-to-end-apps/Forecasting-Sales/src/eShopDashboard/Startup.cs
+++ b/samples/csharp/end-to-end-apps/Forecasting-Sales/src/eShopDashboard/Startup.cs
@@ -95,7 +95,7 @@ public void Configure(IApplicationBuilder app, IHostingEnvironment env)
             var pathBase = Configuration["PATH_BASE"];
 
             app.UseSwagger();
-            if (app.Environment.IsDevelopment())
+            if (env.IsDevelopment())
             {
                 app.UseSwaggerUI(c =>
                 {
diff --git a/samples/modelbuilder/MatrixFactorization_MovieRecommendation/MovieRecommender_WebApi/Program.cs b/samples/modelbuilder/MatrixFactorization_MovieRecommendation/MovieRecommender_WebApi/Program.cs
index 00552109a..17859dd59 100644
--- a/samples/modelbuilder/MatrixFactorization_MovieRecommendation/MovieRecommender_WebApi/Program.cs
+++ b/samples/modelbuilder/MatrixFactorization_MovieRecommendation/MovieRecommender_WebApi/Program.cs
@@ -1,6 +1,7 @@
 // This file was auto-generated by ML.NET Model Builder. 
 using Microsoft.AspNetCore.Builder;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.ML;
 using Microsoft.OpenApi.Models;
 using System.Threading.Tasks;