diff --git a/user_guide/libraries/security.html b/user_guide/libraries/security.html
index 7351874..0cb1d0c 100644
--- a/user_guide/libraries/security.html
+++ b/user_guide/libraries/security.html
@@ -63,11 +63,11 @@
 <h2>XSS Filtering</h2>
 
 <p>CodeIgniter comes with a Cross Site Scripting Hack prevention filter which can either run automatically to filter
-all POST and COOKIE data that is encountered, or you can run it on a per item basis.  By default it does <strong>not</strong>
+all POST and COOKIE data that is encountered, or you can run it on a per item basis. By default it does <strong>not</strong>
 run globally since it requires a bit of processing overhead, and since you may not need it in all cases.</p>
 
 <p>The XSS filter looks for commonly used techniques to trigger Javascript or other types of code that attempt to hijack cookies
-or do other malicious things.  If anything disallowed is encountered it is rendered safe by converting the data to character entities.</p>
+or do other malicious things. If anything disallowed is encountered it is rendered safe by converting the data to character entities.</p>
 
 <p>
 Note: This function should only be used to deal with data upon submission. It's not something that should be used for general runtime processing since it requires a fair amount of processing overhead.</p>
@@ -88,7 +88,7 @@
 
 <p>Note: If you use the form validation class, it gives you the option of XSS filtering as well.</p>
 
-<p>An optional second parameter, <dfn>is_image</dfn>, allows this function to be used to test images for potential XSS attacks, useful for file upload security.  When this second parameter is set to <dfn>TRUE</dfn>, instead of returning an altered string, the function returns TRUE if the image is safe, and FALSE if it contained potentially malicious information that a browser may attempt to execute.</p>
+<p>An optional second parameter, <dfn>is_image</dfn>, allows this function to be used to test images for potential XSS attacks, useful for file upload security. When this second parameter is set to <dfn>TRUE</dfn>, instead of returning an altered string, the function returns TRUE if the image is safe, and FALSE if it contained potentially malicious information that a browser may attempt to execute.</p>
 
 <code>if ($this->security->xss_clean($file, TRUE) === FALSE)<br />
 {<br />
@@ -98,7 +98,7 @@
 
 <h2>$this->security->sanitize_filename()</h2>
 
-<p>When accepting filenames from user input, it is best to sanitize them to prevent directory traversal and other security related issues.  To do so, use the <dfn>sanitize_filename()</dfn> method of the Security class.  Here is an example:</p>
+<p>When accepting filenames from user input, it is best to sanitize them to prevent directory traversal and other security related issues. To do so, use the <dfn>sanitize_filename()</dfn> method of the Security class. Here is an example:</p>
 
 <code>$filename = $this->security->sanitize_filename($this->input->post('filename'));</code>