diff --git a/chapter06/glibc.xml b/chapter06/glibc.xml
index 8fc876220..b5f249a5d 100644
--- a/chapter06/glibc.xml
+++ b/chapter06/glibc.xml
@@ -94,6 +94,7 @@ cd       build</userinput></screen>
              --disable-werror                       \
              --enable-kernel=&min-kernel;                    \
              --enable-obsolete-rpc                  \
+             --enable-obsolete-nsl                  \
              --enable-stack-protector=strong        \
              libc_cv_slibdir=/lib
 unset GCC_INCDIR</userinput></screen>
@@ -118,9 +119,10 @@ unset GCC_INCDIR</userinput></screen>
       </varlistentry>
 
       <varlistentry>
-        <term><parameter>--enable-obsolete-rpc</parameter></term>
+        <term><parameter>--enable-obsolete-rpc</parameter> and 
+          --enable-obsolete-nsl</term>
         <listitem>
-          <para>This option builds older RPC code for use with
+          <para>These options build older RPC code for use with
           network file system utilities (nfs).</para>
         </listitem>
       </varlistentry>