diff --git a/TODO b/TODO
index fa4f05c41..098beb51b 100644
--- a/TODO
+++ b/TODO
@@ -1,3 +1,5 @@
+* test and adjust rate limiter. triggers with scsi_debug
+
 * bind mounts with 'fsck' fail and block for a minute:
     /foo /bar none bind 1 1
   (using fsck is wrong, but why do we block for a minute