diff --git a/articles/ui/ui.tex b/articles/ui/ui.tex
index ce5d43f0c..6596295c2 100644
--- a/articles/ui/ui.tex
+++ b/articles/ui/ui.tex
@@ -196,7 +196,8 @@ provided by TLS is at best questionable.}
  by authenticating against the customer's bank,
 often on a Web site that is operated by the payment
 processor and {\em not} the customer's bank.  Figure~\ref{fig:cc3ds} in the
-Appendix shows a typical card-based payment process on the Web today using the
+% FIXME why "..on the Web today using.." and not just "..on the Web using.."
+Appendix shows a typical card-based payment process on the Web today using the 
 UML style of the W3c payment interest group~\cite{pigs}.  Most of the details
 are not relevant to this paper, but the diagram nicely illustrates the
 complexity of the common 3-D secure (3DS) process.