diff --git a/source/ranges.tex b/source/ranges.tex
index c0e0f45688..2a455af9e2 100644
--- a/source/ranges.tex
+++ b/source/ranges.tex
@@ -2336,6 +2336,8 @@
   c.reserve(static_cast<range_size_t<C>>(ranges::size(r)));
 ranges::copy(r, @\exposid{container-inserter}@<range_reference_t<R>>(c));
 \end{codeblock}
+\item
+Otherwise, the program is ill-formed.
 \end{itemize}
 
 \item