diff --git a/wp-includes/link-template.php b/wp-includes/link-template.php
index 3a4627d56a..a0584efbea 100644
--- a/wp-includes/link-template.php
+++ b/wp-includes/link-template.php
@@ -3438,7 +3438,7 @@ function get_avatar_url( $id_or_email, $args = null ) {
  *                                  Default null.
  *     @type array  $processed_args When the function returns, the value will be the processed/sanitized $args
  *                                  plus a "found_avatar" guess. Pass as a reference. Default null.
- *     @type string $extra_attr     HTML attribute to insert in the IMG element.  Has no default and is not sanitized.
+ *     @type string $extra_attr     HTML attributes to insert in the IMG element. Is not sanitized. Default empty.
  * }
  *
  * @return array $processed_args {
diff --git a/wp-includes/pluggable.php b/wp-includes/pluggable.php
index 71c0d3704b..2abf88404b 100644
--- a/wp-includes/pluggable.php
+++ b/wp-includes/pluggable.php
@@ -2149,7 +2149,7 @@ if ( !function_exists( 'get_avatar' ) ) :
  *                                       Default null.
  *     @type bool         $force_display Whether to always show the avatar - ignores the show_avatars option.
  *                                       Default false.
- *     @type string       $extra_attr    HTML attribute to insert in the IMG element.  Has no default and is not sanitized.
+ *     @type string       $extra_attr    HTML attributes to insert in the IMG element. Is not sanitized. Default empty.
  * }
  *
  * @return false|string `<img>` tag for the user's avatar. False on failure.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 340a640f61..addf69f3a7 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31590';
+$wp_version = '4.2-alpha-31591';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.