1 files changed, 1 insertions, 1 deletions
diff --git a/TODO.txt b/TODO.txt
index 5ad7e93..8112a5e 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -2,7 +2,7 @@ Optimizations
 -------------
 
 The html5lib tree builder doesn't use the standard tree-building API,
-which worries me.
+which worries me and has resulted in a number of bugs.
 
 markup_attr_map can be optimized since it's always a map now.