diff --git a/doc/contrib/ftpasswd.html b/doc/contrib/ftpasswd.html
index f6c1d5d195..125071310f 100644
--- a/doc/contrib/ftpasswd.html
+++ b/doc/contrib/ftpasswd.html
@@ -369,6 +369,18 @@ <h2><a name="Options">Options</a></h2>
                 Crypt::Cracklib module to be installed on your system.
 </pre>
 
+<p><a name="FAQ">
+<b>Frequently Asked Questions</b><br>
+<font color=red>Question</font>: I'm trying to use <code>ftpasswd</code>, but
+it fails with this error:
+<pre>
+  env: perl: No such file or directory
+</pre>
+<font color=blue>Answer</font>: <code>ftpasswd</code> is a Perl script; it
+requires that Perl be installed in order to run.  The above error message
+indicates that a <code>perl</code> executable cannot be found; you will
+need to install Perl.
+
 <p>
 <hr>
 <font size=2><b><i>