diff --git a/source/preprocessor.tex b/source/preprocessor.tex
index 9dad935146..0ef4307508 100644
--- a/source/preprocessor.tex
+++ b/source/preprocessor.tex
@@ -2142,6 +2142,8 @@
 \end{ncsimplebnf}
 requires the implementation to produce at least one diagnostic message
 for the preprocessing translation unit\iref{intro.compliance.general}.
+
+\pnum
 \recommended
 Any diagnostic message caused by either of these directives
 should include the specified sequence of preprocessing tokens.