diff --git a/source/utilities.tex b/source/utilities.tex
index d431fcfd29..73ab92a210 100644
--- a/source/utilities.tex
+++ b/source/utilities.tex
@@ -4543,6 +4543,9 @@
 the \defnx{contained value}{contained value!\idxcode{optional.ref}}
 is a reference to \tcode{*\exposid{val}}.
 
+\pnum
+Each type \tcode{optional<T\&>} is a trivially copyable class\iref{class.prop}.
+
 \rSec3[optional.ref.ctor]{Constructors}
 
 \begin{itemdecl}