diff --git a/src/Compilers/Core/CodeAnalysisTest/ObjectSerializationTests.cs b/src/Compilers/Core/CodeAnalysisTest/ObjectSerializationTests.cs
index 5d1ddd9e171c5fd548d9f1fe2e00db8d993bfc71..d01a7f9d25ce9b4adb9db5a41d719b44d4a72e44 100644
--- a/src/Compilers/Core/CodeAnalysisTest/ObjectSerializationTests.cs
+++ b/src/Compilers/Core/CodeAnalysisTest/ObjectSerializationTests.cs
@@ -12,6 +12,14 @@ namespace Microsoft.CodeAnalysis.UnitTests
 {
     public sealed class ObjectSerializationTests
     {
+        static ObjectSerializationTests()
+        {
+            // Register appropriate deserialization methods.
+            new PrimitiveArrayMemberTest();
+            new PrimitiveMemberTest();
+            new PrimitiveValueTest();
+        }
+
         [Fact]
         private void TestInvalidStreamVersion()
         {