diff --git a/mmalloc/.Sanitize b/mmalloc/.Sanitize
index 30f81953928..92f42734272 100644
--- a/mmalloc/.Sanitize
+++ b/mmalloc/.Sanitize
@@ -27,6 +27,7 @@ Things-to-keep:
 
 ChangeLog
 Makefile.in
+TODO
 attach.c
 config
 configure.in