diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index af90316..a158225 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -1586,7 +1586,6 @@
 	public function reset_validation()
 	{
 		$this->_field_data = array();
-		$this->_config_rules = array();
 		$this->_error_array = array();
 		$this->_error_messages = array();
 		$this->error_string = '';
diff --git a/user_guide_src/source/libraries/form_validation.rst b/user_guide_src/source/libraries/form_validation.rst
index 1fde68d..c288cc8 100644
--- a/user_guide_src/source/libraries/form_validation.rst
+++ b/user_guide_src/source/libraries/form_validation.rst
@@ -1140,4 +1140,4 @@
 -  :php:func:`set_radio()`
 
 Note that these are procedural functions, so they **do not** require you
-to prepend them with ``$this->form_validation``.
\ No newline at end of file
+to prepend them with ``$this->form_validation``.