diff --git a/contrib/search_api_views/includes/query.inc b/contrib/search_api_views/includes/query.inc
index 8b1083e..958470b 100644
--- a/contrib/search_api_views/includes/query.inc
+++ b/contrib/search_api_views/includes/query.inc
@@ -180,21 +180,25 @@ public function add_orderby($table, $field = NULL, $order = 'ASC', $alias = '',
   }
 
   /**
-   * Add a field to the query table.
+   * Adds a field to the query table.
    *
-   * @param $table
+   * This is copied from the views_plugin_query_default class so that
+   * third-party modules which assume it's always present will work correctly
+   * with Search API Views.
+   *
+   * @param string $table
    *   Ignored.
-   * @param $field
+   * @param string $field
    *   The name of the field to add.
-   * @param $alias
+   * @param string $alias
    *   Ignored.
-   * @param $params
+   * @param array $params
    *   Ignored.
    *
-   * @see SearchApiViewsQuery::addField
-   *
-   * @return $name
+   * @return string
    *   The name of the field added.
+   *
+   * @see SearchApiViewsQuery::addField
    */
   function add_field($table, $field, $alias = '', $params = array()) {
     return $this->addField($field);