[ci skip] Polish changes from PR #3176
diff --git a/user_guide_src/source/libraries/security.rst b/user_guide_src/source/libraries/security.rst
index 19480b4..c8d69d1 100644
--- a/user_guide_src/source/libraries/security.rst
+++ b/user_guide_src/source/libraries/security.rst
@@ -97,10 +97,12 @@
 
 	$config['csrf_exclude_uris'] = array('api/person/add');
 
-Optionally, you can use regular expressions in the URIs::
+Regular expressions are also supported (case-insensitive)::
 
-	$config['csrf_exclude_uris'] = array('api/record/[0-9]+','api/title/[a-zA-Z]+');
-	
+	$config['csrf_exclude_uris'] = array(
+		'api/record/[0-9]+',
+		'api/title/[a-z]+'
+	);
 
 ***************
 Class Reference
@@ -161,4 +163,4 @@
 		This method acts a lot like PHP's own native ``html_entity_decode()`` function in ENT_COMPAT mode, only
 		it tries to detect HTML entities that don't end in a semicolon because some browsers allow that.
 
-		If the ``$charset`` parameter is left empty, then your configured ``$config['charset']`` value will be used.
+		If the ``$charset`` parameter is left empty, then your configured ``$config['charset']`` value will be used.
\ No newline at end of file