diff --git a/MacPass/MPDocument+Attachments.m b/MacPass/MPDocument+Attachments.m
index b9b776f2..8c39f3ef 100644
--- a/MacPass/MPDocument+Attachments.m
+++ b/MacPass/MPDocument+Attachments.m
@@ -34,7 +34,9 @@
   }
   KPKBinary *binary = [[KPKBinary alloc] initWithContentsOfURL:location];
   if(binary) {
+    [self willChangeModelProperty];
     [anEntry addBinary:binary];
+    [self didChangeModelProperty];
   }
 }