Index: /trunk/doc/manual/en_US/user_VBoxManage.xml
===================================================================
--- /trunk/doc/manual/en_US/user_VBoxManage.xml	(revision 44127)
+++ /trunk/doc/manual/en_US/user_VBoxManage.xml	(revision 44128)
@@ -3554,5 +3554,5 @@
         <listitem>
           <para>To add a new extension pack, use <computeroutput>VBoxManage
-          extpack install &lt;tarball&gt;</computeroutput>. This command
+          extpack install &lt;.vbox-extpack&gt;</computeroutput>. This command
           will fail if an older version of the same extension pack is already
           installed. The optional <computeroutput>--replace</computeroutput>