diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php
index 731b59e..61a478e 100644
--- a/system/helpers/captcha_helper.php
+++ b/system/helpers/captcha_helper.php
@@ -51,7 +51,7 @@
 	 */
 	function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')
 	{
-		$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200, 'captcha_word_length' => 8, 'character_pool_for_generated_word' => '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
+		$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200, 'word_length' => 8, 'pool' => '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
 
 		foreach ($defaults as $key => $val)
 		{
@@ -72,17 +72,6 @@
 			return FALSE;
 		}
 
-
-
-		// -----------------------------------
-		// Make sure captcha max length is a valid/realistic value.
-		// -----------------------------------
-
-		 $captcha_word_length = (int) $captcha_word_length;
-		 if ($captcha_word_length < 4) { $captcha_word_length = 4;}
-		 if ($captcha_word_length > 15) { $captcha_word_length = 15; }
-		
-
 		// -----------------------------------
 		// Remove old images
 		// -----------------------------------
@@ -107,9 +96,9 @@
 		if (empty($word))
 		{
 			$word = '';
-			for ($i = 0, $mt_rand_max = strlen($character_pool_for_generated_word) - 1; $i < $captcha_word_length; $i++)
+			for ($i = 0, $mt_rand_max = strlen($pool) - 1; $i < $word_length; $i++)
 			{
-				$word .= $character_pool_for_generated_word[mt_rand(0, $mt_rand_max)];
+				$word .= $pool[mt_rand(0, $mt_rand_max)];
 			}
 		}
 		elseif ( ! is_string($word))
@@ -217,4 +206,3 @@
 
 /* End of file captcha_helper.php */
 /* Location: ./system/helpers/captcha_helper.php */
-
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 65e2107..8ab3639 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -105,6 +105,8 @@
    -  :doc:`Directory Helper <helpers/directory_helper>` :php:func:`directory_map()` will now append ``DIRECTORY_SEPARATOR`` to directory names in the returned array.
    -  :doc:`Language Helper <helpers/language_helper>` :php:func:`lang()` now accepts an optional list of additional HTML attributes.
    -  Deprecated the :doc:`Email Helper <helpers/email_helper>` as its ``valid_email()``, ``send_email()`` functions are now only aliases for PHP native functions ``filter_var()`` and ``mail()`` respectively.
+   -  :doc:`CAPTCHA Helper <helpers/captcha_helper>` changes include:
+     - :php:func:`create_captcha` added word_length and pool options for setting length of randomly generated captcha word, and what characters to select from.
 
 -  Database
 
diff --git a/user_guide_src/source/helpers/captcha_helper.rst b/user_guide_src/source/helpers/captcha_helper.rst
index 7dd642a..c6fb002 100644
--- a/user_guide_src/source/helpers/captcha_helper.rst
+++ b/user_guide_src/source/helpers/captcha_helper.rst
@@ -63,8 +63,8 @@
 		'img_width'	=> '150',
 		'img_height'	=> 30,
 		'expiration'	=> 7200,
-		'captcha_word_length'	=> 8,
-		'character_pool_for_generated_word'	=> '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
+		'word_length'	=> 8,
+		'pool'	=> '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
 	);
 
 	$cap = create_captcha($vals);
@@ -81,7 +81,7 @@
 -  The **expiration** (in seconds) signifies how long an image will remain
    in the captcha folder before it will be deleted. The default is two
    hours.
--  **captcha_word_length** defaults to 8 but a sanity check in /system/helpers/captcha_helper.php will enforce it to a minimum length of 4 or maximum length of 15, **character_pool_for_generated_word** defaults to '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
+-  **word_length** defaults to 8, **pool** defaults to '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
 
 Adding a Database
 -----------------