fix -b usage

diff --git a/man/flac.sgml b/man/flac.sgml
index b0c2be1..35e430c 100644 (file)
--- a/man/flac.sgml
+++ b/man/flac.sgml
@@ -180,9 +180,9 @@
                <term><option>-b</option> <replaceable>blocksize</replaceable></term>
 
                <listitem>
-                 <para>Default is 1152 for -l 0, else 4608; should
-                   be 192/576/1152/2304/4608 (unless --lax is
-                   used)</para>
+                 <para>Default is 1152 for -l 0, else 4608; must be
+                   192/576/1152/2304/4608/256/512/1024/2048/4096/8192/16384/32768
+                   (unless --lax is used)</para>
                </listitem>
              </varlistentry>