diff --git a/source/containers.tex b/source/containers.tex
index 3942fa789f..41d928621d 100644
--- a/source/containers.tex
+++ b/source/containers.tex
@@ -25997,7 +25997,7 @@
   \tcode{valid_slices} denote a pack of (possibly const) objects
   for which \tcode{sizeof...(valid_slices) == M_rank} is \tcode{true} and,
   for each rank index $i$ of \tcode{m.extents()},
-  \tcode{valid_slices...[i]} is a valid \tcode{submdspan} slice
+  \tcode{valid_slices...[$i$]} is a valid \tcode{submdspan} slice
   for the $i^\text{th}$ extent of \tcode{m.extents()};
 \item
   \tcode{invalid_slices} denote a pack of objects