diff --git a/chapter06/bc.xml b/chapter06/bc.xml
index 154ed5c8f..f78bd270e 100644
--- a/chapter06/bc.xml
+++ b/chapter06/bc.xml
@@ -100,10 +100,17 @@ ln -sfv libncursesw.so.6 /usr/lib/libncurses.so</userinput></screen>
       </varlistentry>
 
       <varlistentry>
-        <term><parameter>-G -O3</parameter></term>
+        <term><parameter>-O3</parameter></term>
         <listitem>
-          <para>These parameters specify the optimization to use. Debug symbols 
-          will be retained.</para>
+          <para>Specify the optimization to use.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><parameter>-G</parameter></term>
+        <listitem>
+          <para>Omit  parts of the test suite that won't work
+          without a GNU bc present.</para>
         </listitem>
       </varlistentry>
     </variablelist>