diff --git a/2024-09-21.md b/2024-09-21.md
index d9cfc2cf0..e97062f5e 100644
--- a/2024-09-21.md
+++ b/2024-09-21.md
@@ -8,6 +8,7 @@
   - [[UNICEF]]
   - [[Mum]]
   - [[Friends]]
+    - :)
   - [[AG]]
 - Today I noticed that [[37]] = [[19]] + [[18]], meaning a centered hex number plus its center-less partner.
   - So it seems like a very good packing for two hex numbers, in one figure.