diff --git a/src/extensionkit.cs b/src/extensionkit.cs
index d5d70cc2e81e..e772377fd26c 100644
--- a/src/extensionkit.cs
+++ b/src/extensionkit.cs
@@ -44,8 +44,11 @@ interface EXHostViewControllerDelegate {
 		[Export ("hostViewControllerWillDeactivate:error:")]
 		void WillDeactivate (EXHostViewController viewController, [NullAllowed] NSError error);
 
+#if !XAMCORE_5_0
+		[Obsoleted (PlatformName.MacOSX, 14, 0, message: "No longer required.")]
 		[Export ("shouldAcceptXPCConnection:")]
 		bool ShouldAcceptXpcConnection (NSXpcConnection connection);
+#endif
 	}
 
 	// @interface EXHostViewController : NSViewController
diff --git a/tests/xtro-sharpie/macOS-ExtensionKit.todo b/tests/xtro-sharpie/macOS-ExtensionKit.ignore
similarity index 79%
rename from tests/xtro-sharpie/macOS-ExtensionKit.todo
rename to tests/xtro-sharpie/macOS-ExtensionKit.ignore
index 332a517adcc0..b0709f107e8d 100644
--- a/tests/xtro-sharpie/macOS-ExtensionKit.todo
+++ b/tests/xtro-sharpie/macOS-ExtensionKit.ignore
@@ -1 +1,2 @@
+# remove after XAMCORE_5_0
 !extra-protocol-member! unexpected selector EXHostViewControllerDelegate::shouldAcceptXPCConnection: found