diff --git a/doc/latex/nettime.tex b/doc/latex/nettime.tex
index fbc9f9d..641a704 100644
--- a/doc/latex/nettime.tex
+++ b/doc/latex/nettime.tex
@@ -1,4 +1,4 @@
-\section{Using NTP}\label{sec:ntp}
+\section{Using Time and Daytime Protocol}\label{sec:ntp}
 %
 \begin{description}
 \item[Used files:] nettime.scm nettime-obsolete.scm