diff --git a/TODO.org b/TODO.org
index 71fcef0..15262d2 100644
--- a/TODO.org
+++ b/TODO.org
@@ -8,6 +8,10 @@
 ** TODO Fudge dice
    - Note taken on [2018-02-17 Sat 11:02] \\
      The syntax should be XdF and the results should be [-1, -1, 0, 0, +1, +1].
+** TODO verify dual licencing with Lews Van Winkle
+   - Note taken on [2018-02-17 Sat 11:30] \\
+     Verify that dual licencing has been done properly by consult
+     Lewis Van Winkle the author of tinyexpr.
 ** TODO Remove dependency on libbsd
    - Note taken on [2018-02-17 Sat 11:05] \\
      arc4random_uniform() should be moved into the source. On BSD we just use