diff --git a/TODO b/TODO
index 22ab43a5cd..afc7f89542 100644
--- a/TODO
+++ b/TODO
@@ -1,2 +1,5 @@
 ncurses-5.8/5.9:
   - segfaults in nano and dialog -> using ncurses-5.7
+
+bison-2.6:
+  - libaacs-0.4.0 dont compile with bison-2.6