diff --git a/core/modules/filter/filter.admin-rtl.css b/core/modules/filter/filter.admin-rtl.css
index 9fa9f42..c49481b 100644
--- a/core/modules/filter/filter.admin-rtl.css
+++ b/core/modules/filter/filter.admin-rtl.css
@@ -1,7 +1,7 @@
 
 /**
  * @file
- * RTL admin styling for the filter module.
+ * RTL admin styling for the Filter module.
  */
 
 /**
diff --git a/core/modules/filter/filter.admin.css b/core/modules/filter/filter.admin.css
index d6004d5..fdb2eff 100644
--- a/core/modules/filter/filter.admin.css
+++ b/core/modules/filter/filter.admin.css
@@ -1,7 +1,7 @@
 
 /**
  * @file
- * Admin styling for the filter module.
+ * Admin styling for the Filter module.
  */
 
 /**
diff --git a/core/modules/filter/filter.admin.inc b/core/modules/filter/filter.admin.inc
index 96b8e29..57468ad 100644
--- a/core/modules/filter/filter.admin.inc
+++ b/core/modules/filter/filter.admin.inc
@@ -101,8 +101,8 @@ function theme_filter_admin_overview($variables) {
 /**
  * Page callback: Displays the text format add/edit form.
  *
- * @param $format
- *   A format object having the properties:
+ * @param object|null $format
+ *   (optional) An object representing a format, with the following properties:
  *   - format: A machine-readable name representing the ID of the text format
  *     to save. If this corresponds to an existing text format, that format
  *     will be updated; otherwise, a new format will be created.
@@ -135,9 +135,9 @@ function filter_admin_format_page($format = NULL) {
  *
  * @param $format
  *   A format object having the properties:
- *   - format: A machine-readable name representing the ID of the text format
- *     to save. If this corresponds to an existing text format, that format
- *     will be updated; otherwise, a new format will be created.
+ *   - format: A machine-readable name representing the ID of the text format to
+ *     save. If this corresponds to an existing text format, that format will be
+ *     updated; otherwise, a new format will be created.
  *   - name: The title of the text format.
  *   - cache: An integer indicating whether the text format is cacheable (1) or
  *     not (0). Defaults to 1.
diff --git a/core/modules/filter/filter.test b/core/modules/filter/filter.test
index ad33b29..ecdb056 100644
--- a/core/modules/filter/filter.test
+++ b/core/modules/filter/filter.test
@@ -1112,10 +1112,8 @@ class FilterUnitTestCase extends DrupalUnitTestCase {
    *   functionality is not completely focused on filtering. Some ideas:
    *   restricting formats according to user permissions, proper cache
    *   handling, defaults -- allowed tags/attributes/protocols.
-   *
    * @todo It is possible to add script, iframe etc. to allowed tags, but this
    *   makes HTML filter completely ineffective.
-   *
    * @todo Class, id, name and xmlns should be added to disallowed attributes,
    *   or better a whitelist approach should be used for that too.
    */