diff --git a/chapter02/aboutlfs.xml b/chapter02/aboutlfs.xml
index fe8a97902..88dbe6793 100644
--- a/chapter02/aboutlfs.xml
+++ b/chapter02/aboutlfs.xml
@@ -28,6 +28,7 @@
   <quote>/mnt/lfs</quote> (or whatever the variable was set to) when it
   processes the command line.</para>
 
+  <caution>
   <para>Do not forget to check that <envar>LFS</envar> is set whenever
   you leave and reenter the current working environment (such as when doing a
   <command>su</command> to <systemitem class="username">root</systemitem> or
@@ -41,6 +42,7 @@
   provided example was followed. If the output is incorrect, use the command
   given earlier on this  page to set <envar>$LFS</envar> to the correct
   directory name.</para>
+  </caution>
 
   <note><para>One way to ensure that the <envar>LFS</envar> variable is always
   set is to edit the <filename>.bash_profile</filename> file in both your