diff --git a/includes/form.inc b/includes/form.inc
index baadcef..f389235 100644
--- a/includes/form.inc
+++ b/includes/form.inc
@@ -3545,6 +3545,7 @@ function form_process_tableselect($element) {
             '#return_value' => $key,
             '#default_value' => isset($value[$key]) ? $key : NULL,
             '#attributes' => $element['#attributes'],
+            '#ajax' => isset($element['#ajax']) ? $element['#ajax'] : NULL,
           );
         }
         else {