diff --git a/src/appkit.cs b/src/appkit.cs
index 51af74509529..8ff76bec4dbc 100644
--- a/src/appkit.cs
+++ b/src/appkit.cs
@@ -27831,8 +27831,15 @@ interface NSSwitch : NSAccessibilitySwitch
 	[Mac (10,15)]
 	[MacCatalyst (13, 0)]
 	[BaseType (typeof (NSToolbarItem))]
+#if XAMCORE_5_0
+	[DisableDefaultCtor]
+#endif
 	interface NSMenuToolbarItem
 	{
+		[DesignatedInitializer]
+		[Export ("initWithItemIdentifier:")]
+		NativeHandle Constructor (string itemIdentifier);
+
 		[NoMacCatalyst]
 		[Export ("menu", ArgumentSemantic.Strong)]
 		NSMenu Menu { get; set; }
@@ -28207,8 +28214,15 @@ public enum NSFontTextStyle
 	[Mac (10,15)]
 	[MacCatalyst (13, 0)]
 	[BaseType (typeof (NSToolbarItem))]
+#if XAMCORE_5_0
+	[DisableDefaultCtor]
+#endif
 	interface NSSharingServicePickerToolbarItem
 	{
+		[DesignatedInitializer]
+		[Export ("initWithItemIdentifier:")]
+		NativeHandle Constructor (string itemIdentifier);
+
 		[NoMacCatalyst]
 		[Wrap ("WeakDelegate")]
 		[NullAllowed]