diff --git a/src/Orleans.Runtime/Hosting/DefaultSiloServices.cs b/src/Orleans.Runtime/Hosting/DefaultSiloServices.cs
index b78b4b93bd..a061faf06e 100644
--- a/src/Orleans.Runtime/Hosting/DefaultSiloServices.cs
+++ b/src/Orleans.Runtime/Hosting/DefaultSiloServices.cs
@@ -41,6 +41,7 @@
 using System.Collections.Generic;
 using Microsoft.Extensions.Configuration;
 using Orleans.Serialization.Internal;
+using Orleans.Runtime.Configuration.Options;
 
 namespace Orleans.Hosting
 {