diff --git a/source/declarations.tex b/source/declarations.tex
index 098a0e7b16..ee13005979 100644
--- a/source/declarations.tex
+++ b/source/declarations.tex
@@ -1537,7 +1537,7 @@
 
 \pnum
 The \grammarterm{typedef-name} $P$ in a \grammarterm{pack-index-specifier}
-shall denote a pack.
+shall be an \grammarterm{identifier} that denotes a pack.
 
 \pnum
 The \grammarterm{constant-expression} shall be