diff --git a/lib/doc/Math.lyx b/lib/doc/Math.lyx
index 8cf42c4136..51db7d57e8 100644
--- a/lib/doc/Math.lyx
+++ b/lib/doc/Math.lyx
@@ -27672,12 +27672,12 @@ reference "sub:Boxes-without-Frame"
 \end_layout
 
 \begin_layout Subsection
-Minuscule Numbers
+Old-style Figures
 \begin_inset Index idx
 status collapsed
 
 \begin_layout Plain Layout
-Minuscule numbers
+Old-style Figures
 \end_layout
 
 \end_inset
@@ -27686,7 +27686,8 @@ Minuscule numbers
 \end_layout
 
 \begin_layout Standard
-Minuscule numbers are created with the command 
+Old-style figures (also known as old-style numerals) are created with the
+ command 
 \series bold
 
 \backslash