diff --git a/chapter03/introduction.xml b/chapter03/introduction.xml
index 120eaae44..b6cfdc37b 100644
--- a/chapter03/introduction.xml
+++ b/chapter03/introduction.xml
@@ -35,7 +35,7 @@ of the building process.</para>
 <emphasis>root</emphasis>, the following command before starting the
 download session:</para>
 
-<screen><userinput>mkdir $LFS/sources</userinput></screen>
+<screen role="nodump"><userinput>mkdir $LFS/sources</userinput></screen>
 
 <para>Make this directory writable and sticky. <quote>Sticky</quote>
 means that even if multiple users have write permission on a
@@ -43,7 +43,7 @@ directory, only the owner of a file can delete the file within a
 sticky directory. The following command will enable the write and
 sticky modes:</para>
 
-<screen><userinput>chmod a+wt $LFS/sources</userinput></screen>
+<screen role="nodump"><userinput>chmod a+wt $LFS/sources</userinput></screen>
 
 </sect1>