diff --git a/collects/mred/private/kernel.ss b/collects/mred/private/kernel.ss
index 1ab94df6..ad8bb009 100644
--- a/collects/mred/private/kernel.ss
+++ b/collects/mred/private/kernel.ss
@@ -285,6 +285,8 @@
   (define-function set-editor-print-margin)
   (define-function get-editor-print-margin)
   (define-class bitmap% object% #f
+    set-loaded-mask
+    get-loaded-mask
     save-file
     load-file
     is-color?