diff --git a/Src/Newtonsoft.Json.Tests/Documentation/Samples/Serializer/SerializeExtensionData.cs b/Src/Newtonsoft.Json.Tests/Documentation/Samples/Serializer/SerializeExtensionData.cs
index 50f443bd..c67a2c94 100644
--- a/Src/Newtonsoft.Json.Tests/Documentation/Samples/Serializer/SerializeExtensionData.cs
+++ b/Src/Newtonsoft.Json.Tests/Documentation/Samples/Serializer/SerializeExtensionData.cs
@@ -36,6 +36,7 @@ namespace Newtonsoft.Json.Tests.Documentation.Samples.Serializer
     [TestFixture]
     public class SerializeExtensionData : TestFixtureBase
     {
+#pragma warning disable 169
         #region Types
         public class CustomerInvoice
         {
@@ -47,6 +48,7 @@ namespace Newtonsoft.Json.Tests.Documentation.Samples.Serializer
             private IDictionary<string, JToken> _additionalData;
         }
         #endregion
+#pragma warning restore 169
 
         [Test]
         public void Example()