diff --git a/docs/act_intro_chapter.sgml b/docs/act_intro_chapter.sgml
index b9957a9441012eb619d4f107ef80cb0fb887f45d..71984a54c5aa4915d95aaf59ea7224978043bc91 100644
--- a/docs/act_intro_chapter.sgml
+++ b/docs/act_intro_chapter.sgml
@@ -48,7 +48,7 @@ is:
       </PARA>
       <PARA>
          <COMMAND>
-gzip -d &lt; act_compiled.tar.gz | tar xf -
+tar zxf act_compiled.tar.gz
          </COMMAND>
       </PARA>
       <PARA>