diff --git a/system/language/english/form_validation_lang.php b/system/language/english/form_validation_lang.php
index 9156ebe..e44a9e2 100644
--- a/system/language/english/form_validation_lang.php
+++ b/system/language/english/form_validation_lang.php
@@ -53,6 +53,7 @@
 $lang['form_validation_less_than_equal_to']	= 'The {field} field must contain a number less than or equal to {param}.';
 $lang['form_validation_greater_than']		= 'The {field} field must contain a number greater than {param}.';
 $lang['form_validation_greater_than_equal_to']	= 'The {field} field must contain a number greater than or equal to {param}.';
+$lang['form_validation_in']		= 'The {field} field must be within a predetermined list: {param}.';
 
 /* End of file form_validation_lang.php */
 /* Location: ./system/language/english/form_validation_lang.php */
\ No newline at end of file