diff --git a/doc/TODO.020 b/doc/TODO.020
index b6e067863d..01936084dd 100644
--- a/doc/TODO.020
+++ b/doc/TODO.020
@@ -19,6 +19,6 @@ Backport for 0.2.0 once better tested:
   - r17162 and r17164: fix another case of not checking cpath_layer.
   - r17208,r17209,r7211,r17212,r17214: Avoid gotterdammerung when an
     authority has an expired certificate.
-  - r17562: Fix bug 879, wherein a sighup would make us kill all our intro
+  - r17562: Fix bug 874, wherein a sighup would make us kill all our intro
     points and leave their corpses for the next set of intro points to
     stumble over.