diff --git a/core/admin.py b/core/admin.py
index 962c6736..af3962eb 100644
--- a/core/admin.py
+++ b/core/admin.py
@@ -225,8 +225,8 @@ class EbookFileAdmin(ModelAdmin):
     list_display = ('created', 'format', 'ebook_link', 'asking')
     date_hierarchy = 'created'
     ordering = ('edition__work',)
-    fields = ('file', 'format', 'edition', 'edition_link', 'ebook', 'ebook_link', 'source')
-    readonly_fields = ('file', 'edition_link', 'ebook_link',)
+    fields = ('file', 'format', 'edition', 'edition_link', 'ebook', 'ebook_link', 'source', 'mobied')
+    readonly_fields = ('file', 'edition_link', 'ebook_link', 'source')
     def edition_link(self, obj):
         if obj.edition:
             link = reverse("admin:core_edition_change", args=[obj.edition_id])