diff --git a/core/includes/entity.inc b/core/includes/entity.inc
index 012ef47..c132c2b 100644
--- a/core/includes/entity.inc
+++ b/core/includes/entity.inc
@@ -485,6 +485,11 @@ function entity_form_submit(EntityInterface $entity, $operation = 'default', &$f
  *   (optional) The operation identifying the form variation to be returned.
  * @param array $form_state
  *   (optional) An associative array containing the current state of the form.
+ *   Use this to pass additional information to the form, such as the langcode.
+ *   @code
+ *   $form_state['langcode'] = $langcode;
+ *   $form = entity_get_form($entity, 'default', $form_state);
+ *   @endcode
  *
  * @return
  *   The processed form for the given entity and operation.