diff --git a/system/libraries/Validation.php b/system/libraries/Validation.php
index a0423c7..c828328 100644
--- a/system/libraries/Validation.php
+++ b/system/libraries/Validation.php
@@ -589,17 +589,17 @@
 

 	// --------------------------------------------------------------------

 

-    /**

-     * Is Numeric

-     *

-     * @access    public

-     * @param    string

-     * @return    bool

-     */

-    function is_numeric($str)

-    {

-        return ( ! is_numeric($str)) ? FALSE : TRUE;

-    } 

+	/**

+	 * Is Numeric

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	bool

+	 */

+  	function is_numeric($str)

+	{

+		return ( ! is_numeric($str)) ? FALSE : TRUE;

+	} 

 

 	// --------------------------------------------------------------------

 	

@@ -617,31 +617,31 @@
 

 	// --------------------------------------------------------------------

 

-    /**

-     * Is a Natural number  (0,1,2,3, etc.)

-     *

-     * @access	public

-     * @param	string

-     * @return	bool

-     */

-    function is_natural($str)

-    {   

+	/**

+	 * Is a Natural number  (0,1,2,3, etc.)

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	bool

+	 */

+	function is_natural($str)

+	{   

    		return (bool)preg_match( '/^[0-9]+$/', $str);

-    }

+	}

 

 	// --------------------------------------------------------------------

 

-    /**

-     * Is a Natural number, but not a zero  (1,2,3, etc.)

-     *

-     * @access	public

-     * @param	string

-     * @return	bool

-     */

+	/**

+	 * Is a Natural number, but not a zero  (1,2,3, etc.)

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	bool

+	 */

 	function is_natural_no_zero($str)

-    {   

+	{   

    		return (bool)preg_match( '/^[1-9]+$/', $str);

-    }

+	}

 

 	// --------------------------------------------------------------------