diff --git a/src/Microsoft.AspNet.Server.Kestrel/ServerInformation.cs b/src/Microsoft.AspNet.Server.Kestrel/ServerInformation.cs
index ec80e002a1..423c848623 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/ServerInformation.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/ServerInformation.cs
@@ -18,7 +18,7 @@ namespace Microsoft.AspNet.Server.Kestrel
         public void Initialize(IConfiguration configuration)
         {
             var urls = configuration["server.urls"];
-            if (!string.IsNullOrEmpty(urls))
+            if (string.IsNullOrEmpty(urls))
             {
                 urls = "http://+:5000/";
             }