--- a/man/ypbind.8.xml
+++ b/man/ypbind.8.xml
@@ -51,6 +51,7 @@
       <arg choice='opt'>-f <replaceable>configfile</replaceable></arg>
       <arg choice='opt'>-local-only </arg>
       <arg choice='opt'>-ping-interval <replaceable>ping-interval</replaceable></arg>
+      <arg choice='opt'>-p <replaceable>port</replaceable></arg>
   </cmdsynopsis>
   <cmdsynopsis>
     <command>ypbind</command>
@@ -256,6 +257,14 @@
   </listitem>
   </varlistentry>
   <varlistentry>
+  <term><option>-p</option> port</term>
+  <listitem>
+<para>The privileged port number that
+<command>ypbind</command>
+should use to bind itself.</para>
+  </listitem>
+  </varlistentry>
+  <varlistentry>
   <term><option>--version</option></term>
   <listitem>
 <para>Prints the version number</para>
--- a/src/ypbind-mt.c
+++ b/src/ypbind-mt.c
@@ -483,7 +483,7 @@
     output = stdout;
 
   fputs (_("Usage:\n"), output);
-  fputs (_("\typbind [-broadcast | -ypset | -ypsetme] [-f configfile]\n\t  [-no-ping] [-broken-server] [-local-only] [-i ping-interval]\n\t  [-debug] [-verbose] [-n | -foreground]\n"), output);
+  fputs (_("\typbind [-broadcast | -ypset | -ypsetme] [-f configfile]\n\t  [-no-ping] [-broken-server] [-local-only] [-i ping-interval]\n\t   [-p port] [-debug] [-verbose] [-n | -foreground]\n"), output);
   fputs (_("\typbind -c [-f configfile]\n"), output);
   fputs (_("\typbind --version\n"), output);
   exit (ret);
