diff --git a/TODO.md b/TODO.md
index 7de18ef04..0823e2d0d 100644
--- a/TODO.md
+++ b/TODO.md
@@ -5,8 +5,9 @@
 - if macros have release, note off should release them
 - add ability to move selection by dragging
 - find and replace
+- implement Defle slide bug when using E1xy/E2xy and repeating origin note (requires format change)
 
 # to-do for 0.6pre2 (as this requires new data structures)
 
 - Game Boy envelope macro/sequence
-- volume commands should work on Game Boy
\ No newline at end of file
+- volume commands should work on Game Boy