1 files changed, 3 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers.Test/Compatibility/JsonCompatibilityTests.cs b/csharp/src/ProtocolBuffers.Test/Compatibility/JsonCompatibilityTests.cs
index 3c943d33..a1e0ed33 100644
--- a/csharp/src/ProtocolBuffers.Test/Compatibility/JsonCompatibilityTests.cs
+++ b/csharp/src/ProtocolBuffers.Test/Compatibility/JsonCompatibilityTests.cs
@@ -1,8 +1,10 @@
 using System.IO;
 using Google.ProtocolBuffers.Serialization;
+using NUnit.Framework;
 
 namespace Google.ProtocolBuffers.Compatibility
 {
+    [TestFixture]
     public class JsonCompatibilityTests : CompatibilityTests
     {
         protected override object SerializeMessage<TMessage, TBuilder>(TMessage message)
@@ -20,6 +22,7 @@ namespace Google.ProtocolBuffers.Compatibility
         }
     }
 
+    [TestFixture]
     public class JsonCompatibilityFormattedTests : CompatibilityTests
     {
         protected override object SerializeMessage<TMessage, TBuilder>(TMessage message)