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..6f9b35917 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
@@ -95,9 +95,9 @@ public void Configure(IApplicationBuilder app, IHostingEnvironment env)
             var pathBase = Configuration["PATH_BASE"];
 
             app.UseSwagger();
-            if (app.Environment.IsDevelopment())
+            if (env.IsDevelopment())
             {
-                app.UseSwaggerUI(c =>
+                app.UseSwaggerUI(c => // UseSwaggerUI is called only in Development.
                 {
                     c.SwaggerEndpoint($"{ (!string.IsNullOrEmpty(pathBase) ? pathBase : string.Empty) }/swagger/v1/swagger.json", "eShopDashboard.API V1");
                 });