diff --git a/src/Microsoft.AspNet.Hosting/HostingEnvironmentExtensions.cs b/src/Microsoft.AspNet.Hosting/HostingEnvironmentExtensions.cs
index 4ff521aefb..74cf50ec74 100644
--- a/src/Microsoft.AspNet.Hosting/HostingEnvironmentExtensions.cs
+++ b/src/Microsoft.AspNet.Hosting/HostingEnvironmentExtensions.cs
@@ -12,7 +12,7 @@ namespace Microsoft.AspNet.Hosting
         private const string OldEnvironmentKey = "ASPNET_ENV";
         private const string EnvironmentKey = "Hosting:Environment";
 
-        private const string WebRootKey = "Hosting:WebRoot";
+        private const string WebRootKey = "webroot";
 
         public static void Initialize(this IHostingEnvironment hostingEnvironment, string applicationBasePath, IConfiguration config)
         {
diff --git a/test/Microsoft.AspNet.Hosting.Tests/HostingEngineTests.cs b/test/Microsoft.AspNet.Hosting.Tests/HostingEngineTests.cs
index 1d9ababa9d..928cd5bb35 100644
--- a/test/Microsoft.AspNet.Hosting.Tests/HostingEngineTests.cs
+++ b/test/Microsoft.AspNet.Hosting.Tests/HostingEngineTests.cs
@@ -260,7 +260,7 @@ namespace Microsoft.AspNet.Hosting
         {
             var vals = new Dictionary<string, string>
             {
-                { "Hosting:WebRoot", "testroot" }
+                { "webroot", "testroot" }
             };
 
             var builder = new ConfigurationBuilder()