diff --git a/doc/bugs/Problem_when_dropping_unused_files.mdwn b/doc/bugs/Problem_when_dropping_unused_files.mdwn
index 853ab3c3c5..2c15680b8b 100644
--- a/doc/bugs/Problem_when_dropping_unused_files.mdwn
+++ b/doc/bugs/Problem_when_dropping_unused_files.mdwn
@@ -15,3 +15,7 @@ I have no idea, but once it happens I can't interact with unused files anymore.
 ### What version of git-annex are you using? On what operating system?
 
 git-annex version: 4.20130815, OS X 10.8.4
+
+> [[done]]; no indication this is anything other than a corrupt git
+> repository, which can be caused by system crash, disk data loss, 
+> cosmic rays, etc. This is why we keep backups... --[[Joey]]