diff --git a/source/ifndr.tex b/source/ifndr.tex
index 5f3f0a706f..47b36e13e3 100644
--- a/source/ifndr.tex
+++ b/source/ifndr.tex
@@ -604,7 +604,7 @@
 
 \pnum
 If a constructor delegates to itself directly or indirectly,
-the program is ill-formed, no diagnostic required
+the program is ill-formed, no diagnostic required.
 
 \pnum
 \begin{example}