diff --git a/user_guide/helpers/security_helper.html b/user_guide/helpers/security_helper.html
index 5732cb7..dfc813c 100644
--- a/user_guide/helpers/security_helper.html
+++ b/user_guide/helpers/security_helper.html
@@ -75,16 +75,17 @@
 <a href="../libraries/input.html">Input class</a>.  More info can be found there.</p>
 
 
-<h2>dohash()</h2>
+<h2>do_hash()</h2>
 
 <p>Permits you to create SHA1 or MD5 one way hashes suitable for encrypting passwords.  Will create SHA1 by default. Examples:</p>
 
 <code>
-$str = dohash($str); // SHA1<br />
+$str = do_hash($str); // SHA1<br />
 <br />
-$str = dohash($str, 'md5'); // MD5
+$str = do_hash($str, 'md5'); // MD5
 </code>
 
+<p class="important"><strong>Note:</strong>  This function was formerly named <kbd>dohash()</kbd>, which has been deprecated in favour of <kbd>do_hash()</kbd>.</p>