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-rw-r--r--lib/PublicInbox/Inbox.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/PublicInbox/Inbox.pm b/lib/PublicInbox/Inbox.pm
index 4e3c23f3..bd1de0a0 100644
--- a/lib/PublicInbox/Inbox.pm
+++ b/lib/PublicInbox/Inbox.pm
@@ -426,7 +426,7 @@ sub on_unlock {
         }
 }
 
-sub uidvalidity  { $_[0]->{uidvalidity} //= $_[0]->mm->created_at }
+sub uidvalidity { $_[0]->{uidvalidity} //= eval { $_[0]->mm->created_at } }
 
 sub eidx_key { $_[0]->{newsgroup} // $_[0]->{inboxdir} }