1 files changed, 5 insertions, 2 deletions
diff --git a/src/csharp/Grpc.Core.Tests/Internal/CompletionQueueEventTest.cs b/src/csharp/Grpc.Core.Tests/Internal/CompletionQueueEventTest.cs
index 27c2fa8bf0..259520846f 100644
--- a/src/csharp/Grpc.Core.Tests/Internal/CompletionQueueEventTest.cs
+++ b/src/csharp/Grpc.Core.Tests/Internal/CompletionQueueEventTest.cs
@@ -29,9 +29,12 @@ namespace Grpc.Core.Internal.Tests
     public class CompletionQueueEventTest
     {
         [Test]
-        public void CreateAndDestroy()
+        public void CompletionQueueEventSizeIsNativeSize()
         {
-            Assert.AreEqual(CompletionQueueEvent.NativeSize, Marshal.SizeOf<CompletionQueueEvent>());
+            #pragma warning disable 0618
+            // We need to use the obsolete non-generic version of Marshal.SizeOf because the generic version is not available in net45
+            Assert.AreEqual(CompletionQueueEvent.NativeSize, Marshal.SizeOf(typeof(CompletionQueueEvent)));
+            #pragma warning restore 0618
         }
     }
 }