diff --git a/chapter06/texinfo.xml b/chapter06/texinfo.xml
index 97a5a9931..11a9eed06 100644
--- a/chapter06/texinfo.xml
+++ b/chapter06/texinfo.xml
@@ -41,10 +41,6 @@
   <sect2 role="installation">
     <title>Installation of Texinfo</title>
 
-    <para>Fix a file that creates a lot of failures in the regression checks:</para>
-
-<screen><userinput remap="pre">sed -i '5481,5485 s/({/(\\{/' tp/Texinfo/Parser.pm</userinput></screen>
-
     <para>Prepare Texinfo for compilation:</para>
 
 <screen><userinput remap="configure">./configure --prefix=/usr --disable-static</userinput></screen>