--- views_handler_filter_string.inc.org	2011-01-26 13:45:12.000000000 +0100
+++ views_handler_filter_string.inc	2011-01-26 13:42:55.000000000 +0100
@@ -182,6 +182,7 @@ class views_handler_filter_string extend
         '#title' => t('Value'),
         '#size' => 30,
         '#default_value' => $this->value,
+        '#maxlength' => null,
       );
       if (!empty($form_state['exposed']) && !isset($form_state['input'][$identifier])) {
         $form_state['input'][$identifier] = $this->value;