diff --git a/modules/filter/filter.admin.inc b/modules/filter/filter.admin.inc
index 36f253775e6..96e010d4407 100644
--- a/modules/filter/filter.admin.inc
+++ b/modules/filter/filter.admin.inc
@@ -314,10 +314,18 @@ function filter_admin_configure(&$form_state, $format) {
   else {
     $form['error'] = array('#value' => t('No settings are available.'));
   }
-
+  $form['format'] = array('#type' => 'hidden', '#value' => $format->format);
+  $form['#submit'][] = 'filter_admin_configure_submit';
   return $form;
 }
 
+/**
+ * Clear the filter's cache when configuration settings are saved.
+ */
+function filter_admin_configure_submit($form, &$form_state) {
+  cache_clear_all($form_state['values']['format'] .':', 'cache_filter', TRUE);
+}
+
 /**
  * Menu callback; display form for ordering filters for a format.
  */