diff --git a/src/aspnet-core/src/YoyoBoot.Web.Host/Startup/Program.cs b/src/aspnet-core/src/YoyoBoot.Web.Host/Startup/Program.cs
index 57003016..37f6985c 100644
--- a/src/aspnet-core/src/YoyoBoot.Web.Host/Startup/Program.cs
+++ b/src/aspnet-core/src/YoyoBoot.Web.Host/Startup/Program.cs
@@ -81,8 +81,8 @@ namespace YoyoBoot.Web.Host.Startup
                       else
                       {
                           // var value = _configuration["CustomerBusiness:Value"].ToStringExt();
-                          var aa = AppConfigurtaionServices.Configuration["Port"].ToInt();
-                          options.Listen(ippaddress, aa);
+                          var port = AppConfigurtaionServices.Configuration["Port"].ToInt();
+                          options.Listen(ippaddress, port);
                       }
 
                       // options.ListenAnyIP(6698) ;