diff --git a/source/ifndr.tex b/source/ifndr.tex
index 036de5cf6c..5f3f0a706f 100644
--- a/source/ifndr.tex
+++ b/source/ifndr.tex
@@ -644,7 +644,7 @@
 
 \pnum
 Some literal suffix identifiers are
-reserved for future standardization. A declaration whose literal-operator-id uses such a literal
+reserved for future standardization. A declaration whose \grammarterm{literal-operator-id} uses such a literal
 suffix identifier is ill-formed, no diagnostic required.
 
 \pnum