diff --git a/source/containers.tex b/source/containers.tex
index 43f506d21e..38adf12f61 100644
--- a/source/containers.tex
+++ b/source/containers.tex
@@ -26074,11 +26074,11 @@
 \item
   \tcode{M} denote a layout mapping class;
 \item
-  \tcode{IT} denote \tcode{M::extent_type::index_type};
+  \tcode{IT} denote \tcode{M::extents_type::index_type};
 \item
   \tcode{m} denote a value of type (possibly const) \tcode{M};
 \item
-  \tcode{M_rank} be equal to \tcode{M::extent_type::rank()};
+  \tcode{M_rank} be equal to \tcode{M::extents_type::rank()};
 \item
   \tcode{valid_slices} denote a pack of (possibly const) objects
   for which \tcode{sizeof...(valid_slices) == M_rank} is \tcode{true} and,