Fixed double-space typo.
diff --git a/user_guide/helpers/security_helper.html b/user_guide/helpers/security_helper.html
index e0cace3..49e0365 100644
--- a/user_guide/helpers/security_helper.html
+++ b/user_guide/helpers/security_helper.html
@@ -71,19 +71,19 @@
 
 <h2>xss_clean()</h2>
 
-<p>Provides Cross Site Script Hack filtering.  This function is an alias to the one in the
-<a href="../libraries/input.html">Input class</a>.  More info can be found there.</p>
+<p>Provides Cross Site Script Hack filtering. This function is an alias to the one in the
+<a href="../libraries/input.html">Input class</a>. More info can be found there.</p>
 
 
 <h2>sanitize_filename()</h2>
 
-<p>Provides protection against directory traversal.  This function is an alias to the one in the
-<a href="../libraries/security.html">Security class</a>.  More info can be found there.</p>
+<p>Provides protection against directory traversal. This function is an alias to the one in the
+<a href="../libraries/security.html">Security class</a>. More info can be found there.</p>
 
 
 <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>
+<p>Permits you to create SHA1 or MD5 one way hashes suitable for encrypting passwords. Will create SHA1 by default. Examples:</p>
 
 <code>
 $str = do_hash($str); // SHA1<br />
@@ -91,13 +91,13 @@
 $str = do_hash($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>
+<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>
 
 
 
 <h2>strip_image_tags()</h2>
 
-<p>This is a security function that will strip image tags from a string.  It leaves the image URL as plain text.</p>
+<p>This is a security function that will strip image tags from a string. It leaves the image URL as plain text.</p>
 
 <code>$string = strip_image_tags($string);</code>