diff --git a/system/str.php b/system/str.php
index 3c7668a8..3cd36c11 100644
--- a/system/str.php
+++ b/system/str.php
@@ -10,107 +10,107 @@ class Str {
 	 */
 	public static function entities($value)
 	{
-        return htmlentities($value, ENT_QUOTES, Config::get('application.encoding'), false);
+		return htmlentities($value, ENT_QUOTES, Config::get('application.encoding'), false);
 	}
 
-    /**
-     * Convert a string to lowercase.
-     *
-     * @param  string  $value
-     * @return string
-     */
-    public static function lower($value)
-    {
-        return function_exists('mb_strtolower') ? mb_strtolower($value, Config::get('application.encoding')) : strtolower($value);
-    }
+	/**
+	 * Convert a string to lowercase.
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	public static function lower($value)
+	{
+		return function_exists('mb_strtolower') ? mb_strtolower($value, Config::get('application.encoding')) : strtolower($value);
+	}
 
-    /**
-     * Convert a string to uppercase.
-     *
-     * @param  string  $value
-     * @return string
-     */
-    public static function upper($value)
-    {
-        return function_exists('mb_strtoupper') ? mb_strtoupper($value, Config::get('application.encoding')) : strtoupper($value);
-    }
+	/**
+	 * Convert a string to uppercase.
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	public static function upper($value)
+	{
+		return function_exists('mb_strtoupper') ? mb_strtoupper($value, Config::get('application.encoding')) : strtoupper($value);
+	}
 
-    /**
-     * Convert a string to title case (ucwords).
-     *
-     * @param  string  $value
-     * @return string
-     */
-    public static function title($value)
-    {
-        return (function_exists('mb_convert_case')) ? mb_convert_case($value, MB_CASE_TITLE, Config::get('application.encoding')) : ucwords(strtolower($value));
-    }
+	/**
+	 * Convert a string to title case (ucwords).
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	public static function title($value)
+	{
+		return (function_exists('mb_convert_case')) ? mb_convert_case($value, MB_CASE_TITLE, Config::get('application.encoding')) : ucwords(strtolower($value));
+	}
 
-    /**
-     * Get the length of a string.
-     *
-     * @param  string  $value
-     * @return int
-     */
-    public static function length($value)
-    {
-        return function_exists('mb_strlen') ? mb_strlen($value, Config::get('application.encoding')) : strlen($value);
-    }
+	/**
+	 * Get the length of a string.
+	 *
+	 * @param  string  $value
+	 * @return int
+	 */
+	public static function length($value)
+	{
+		return function_exists('mb_strlen') ? mb_strlen($value, Config::get('application.encoding')) : strlen($value);
+	}
 
-    /**
-     * Convert a string to 7-bit ASCII.
-     *
-     * @param  string  $value
-     * @return string
-     */
-    public static function ascii($value)
-    {
-        $foreign = Config::get('ascii');
+	/**
+	 * Convert a string to 7-bit ASCII.
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	public static function ascii($value)
+	{
+		$foreign = Config::get('ascii');
 
-        $value = preg_replace(array_keys($foreign), array_values($foreign), $value);
+		$value = preg_replace(array_keys($foreign), array_values($foreign), $value);
 
-        return preg_replace('/[^\x09\x0A\x0D\x20-\x7E]/', '', $value);
-    }
+		return preg_replace('/[^\x09\x0A\x0D\x20-\x7E]/', '', $value);
+	}
 
-    /**
-     * Generate a random alpha or alpha-numeric string.
-     *
-     * Supported types: 'alpha_num' and 'alpha'.
-     *
-     * @param  int     $length
-     * @param  string  $type
-     * @return string
-     */
-    public static function random($length = 16, $type = 'alpha_num')
-    {
-        $value = '';
+	/**
+	 * Generate a random alpha or alpha-numeric string.
+	 *
+	 * Supported types: 'alpha_num' and 'alpha'.
+	 *
+	 * @param  int	 $length
+	 * @param  string  $type
+	 * @return string
+	 */
+	public static function random($length = 16, $type = 'alpha_num')
+	{
+		$value = '';
 
-        $pool_length = strlen($pool = static::pool($type)) - 1;
+		$pool_length = strlen($pool = static::pool($type)) - 1;
 
-        for ($i = 0; $i < $length; $i++)
-        {
-            $value .= $pool[mt_rand(0, $pool_length)];
-        }
+		for ($i = 0; $i < $length; $i++)
+		{
+			$value .= $pool[mt_rand(0, $pool_length)];
+		}
 
-        return $value;
-    }
+		return $value;
+	}
 
-    /**
-     * Get a chracter pool.
-     *
-     * @param  string  $type
-     * @return string
-     */
-    private static function pool($type = 'alpha_num')
-    {
-        switch ($type)
-        {
-            case 'alpha_num':
-                return '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
-            
-            default:
-                return 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
-        }
-    }
+	/**
+	 * Get a chracter pool.
+	 *
+	 * @param  string  $type
+	 * @return string
+	 */
+	private static function pool($type = 'alpha_num')
+	{
+		switch ($type)
+		{
+			case 'alpha_num':
+				return '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+			
+			default:
+				return 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+		}
+	}
 
 }
\ No newline at end of file