diff --git a/boards/admin.py b/boards/admin.py
--- a/boards/admin.py
+++ b/boards/admin.py
@@ -148,6 +148,7 @@ class BannerAdmin(admin.ModelAdmin):
 
 @admin.register(Attachment)
 class AttachmentAdmin(admin.ModelAdmin):
+    list_display = ('mimetype', 'file', 'url', 'alias')
     search_fields = ('alias',)