diff --git a/multimedia/libdriv/libsndfile.xml b/multimedia/libdriv/libsndfile.xml
index 9e1cf0dca4..565e6018a2 100644
--- a/multimedia/libdriv/libsndfile.xml
+++ b/multimedia/libdriv/libsndfile.xml
@@ -82,6 +82,8 @@
     <bridgehead renderas="sect4">Optional</bridgehead>
     <para role="optional">
       <xref linkend="alsa-lib"/>,
+      <xref linkend="lame"/>,
+      <xref linkend="mpg123"/>,
       <xref linkend="speex"/>, and
       <xref linkend="sqlite"/>
     </para>