diff --git a/source/compatibility.tex b/source/compatibility.tex
index 95ce283019..218bdfe95c 100644
--- a/source/compatibility.tex
+++ b/source/compatibility.tex
@@ -2821,7 +2821,7 @@
 
 \diffref{lex.key}
 \change
-New Keywords.\\
+New keywords.\\
 New keywords are added to \Cpp{};
 see \ref{lex.key}.
 \rationale