diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index 3c932cd..896c4f8 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -1082,7 +1082,8 @@ function node_query_node_access_alter(AlterableInterface $query) {
  *   (optional) The boolean value to be written.
  *
  * @return bool|null
- *   The current value of the flag if no value was provided for $rebuild.
+ *   The current value of the flag if no value was provided for $rebuild. If a
+ *   value was provided for $rebuild, nothing (NULL) is returned.
  *
  * @see node_access_rebuild()
  */
diff --git a/core/modules/system/system.module b/core/modules/system/system.module
index 49771da..d3b55f9 100644
--- a/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -387,6 +387,8 @@ function system_theme_suggestions_field(array $variables) {
  *   object created by authorize.php when the user authorizes the operation.
  * @param $page_title
  *   Optional string to use as the page title once redirected to authorize.php.
+ * @return
+ *   Nothing, this function just initializes variables in the user's session.
  */
 function system_authorized_init($callback, $file, $arguments = array(), $page_title = NULL) {
   // First, figure out what file transfer backends the site supports, and put
@@ -441,7 +443,6 @@ function system_authorized_batch_processing_url(array $options = array()) {
 /**
  * Setup and invoke an operation using authorize.php.
  *
- * @return RedirectResponse
  * @see system_authorized_init()
  */
 function system_authorized_run($callback, $file, $arguments = array(), $page_title = NULL) {