diff --git a/chapter05/fileutils-inst.xml b/chapter05/fileutils-inst.xml
index 39b07067d..d83b3efa9 100644
--- a/chapter05/fileutils-inst.xml
+++ b/chapter05/fileutils-inst.xml
@@ -28,5 +28,9 @@ not, then you need to re-do the installation using the sed commands if
 you didn't use them, or without the sed commands if you did use 
 them.</para>
 
+<para>Note that in some cases using these sed commands will result in
+problems not being able to compile this at package at all. If that's the
+case, start over again and don't use the sed commands.</para>
+
 </sect2>