diff --git a/TODO b/TODO
index 1b9c25f58..3eb1673ee 100644
--- a/TODO
+++ b/TODO
@@ -1,5 +1,8 @@
 These are the TODO items for the next LFS release (3.0):
 
+* Since flex sits in ftp.gnu.org/non-gnu/flex it suggest the main
+  download site for flex is elsewhere.
+
 * When installing Glibc in chapter 6 glibc-build/login/pt_chown isn't
   installed (we'll copy manually for now) and the mtrace program isn't
   build. Find out why.