diff --git a/tests/linker/CommonDontLinkTest.cs b/tests/linker/CommonDontLinkTest.cs
index fef28d94032b..c4f7c16f18a9 100644
--- a/tests/linker/CommonDontLinkTest.cs
+++ b/tests/linker/CommonDontLinkTest.cs
@@ -11,6 +11,9 @@ namespace DontLink {
 	[TestFixture]
 	public class CommonDontLinkTest {
 
+#if NET
+		[Ignore ("This test accesses internal implementation details for TypeConverters, which has changed in .NET.")]
+#endif
 		[Test]
 		public void TypeDescriptorCanary ()
 		{
@@ -22,12 +25,7 @@ public void TypeDescriptorCanary ()
 			var ht = (Hashtable) p.GetGetMethod (true).Invoke (null, null);
 			Assert.NotNull (ht, "Hashtable");
 
-#if NET
-			var expectedCount = 28;
-#else
-			var expectedCount = 26;
-#endif
-			Assert.That (ht.Count, Is.EqualTo (expectedCount), "Count");
+			Assert.That (ht.Count, Is.EqualTo (26), "Count");
 
 			foreach (var item in ht.Values) {
 				var name = item.ToString ();
@@ -57,10 +55,6 @@ public void TypeDescriptorCanary ()
 				case "System.ComponentModel.UInt32Converter":
 				case "System.ComponentModel.ByteConverter":
 				case "System.ComponentModel.EnumConverter":
-#if NET
-				case "System.ComponentModel.VersionConverter":
-				case "System.UriTypeConverter":
-#endif
 					break;
 				default:
 					Assert.Fail ($"Unknown type descriptor {name}");