diff --git a/TODO.md b/TODO.md
index 79e5e8829..608e1b1f9 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,6 +1,7 @@
 Bugs:
 
 * Underline should use freetype underline thickness hint
+* Glyph baseline is using the main font, but it can vary font to font
 
 Performance: