diff --git a/src/coredata.cs b/src/coredata.cs
index 84c34c3f2fab..b2abb00f8e07 100644
--- a/src/coredata.cs
+++ b/src/coredata.cs
@@ -10,6 +10,9 @@
 using System;
 using Foundation;
 using ObjCRuntime;
+#if MONOMAC
+using AppKit;
+#endif
 #if !WATCH
 using CoreSpotlight;
 #endif
@@ -909,7 +912,10 @@ interface NSQueryGenerationToken : NSSecureCoding, NSCopying
 	interface NSManagedObjectContext : NSCoding
 #if !WATCH && !TVOS
 	, NSLocking
-#endif // !WATCH
+#endif
+#if MONOMAC
+	, NSEditor, NSEditorRegistration
+#endif
 	{
 
 		[NullAllowed] // by default this property is null
diff --git a/tests/xtro-sharpie/macOS-AppKit.todo b/tests/xtro-sharpie/macOS-AppKit.todo
deleted file mode 100644
index 4f32faef65f4..000000000000
--- a/tests/xtro-sharpie/macOS-AppKit.todo
+++ /dev/null
@@ -1,2 +0,0 @@
-!missing-protocol-conformance! NSManagedObjectContext should conform to NSEditor (defined in 'NSEditorAndEditorRegistrationConformance' category)
-!missing-protocol-conformance! NSManagedObjectContext should conform to NSEditorRegistration (defined in 'NSEditorAndEditorRegistrationConformance' category)