diff --git a/sb_ac_doc/ViewController.swift b/sb_ac_doc/ViewController.swift
index f38507e..bc88732 100644
--- a/sb_ac_doc/ViewController.swift
+++ b/sb_ac_doc/ViewController.swift
@@ -10,7 +10,7 @@ import Cocoa
 
 class ViewController: NSViewController
 {
-    var context: NSManagedObjectContext?
+    dynamic var context: NSManagedObjectContext?
     
     override func viewDidLoad()
     {