diff --git a/source/iostreams.tex b/source/iostreams.tex
index 95282606c4..4c5f08ae51 100644
--- a/source/iostreams.tex
+++ b/source/iostreams.tex
@@ -5384,7 +5384,7 @@
 \begin{itemdescr}
 \pnum
 \returns
-\tcode{getline(s, n, widen('\textbackslash n'))}
+\tcode{getline(s, n, widen('\textbackslash n'))}.
 \end{itemdescr}
 
 \indexlibrarymember{ignore}{basic_istream}%