diff --git a/src/wp-includes/user.php b/src/wp-includes/user.php
index a4ff0bb340..ca4b3d03fd 100644
--- a/src/wp-includes/user.php
+++ b/src/wp-includes/user.php
@@ -691,7 +691,7 @@ function get_user_option( $option, $user = 0, $deprecated = '' ) {
  * Updates user option with global blog capability.
  *
  * User options are just like user metadata except that they have support for
- * global blog options. If the 'global' parameter is false, which it is by default
+ * global blog options. If the 'is_global' parameter is false, which it is by default,
  * it will prepend the WordPress table prefix to the option name.
  *
  * Deletes the user option if $newvalue is empty.
@@ -703,15 +703,15 @@ function get_user_option( $option, $user = 0, $deprecated = '' ) {
  * @param int    $user_id     User ID.
  * @param string $option_name User option name.
  * @param mixed  $newvalue    User option value.
- * @param bool   $global      Optional. Whether option name is global or blog specific.
+ * @param bool   $is_global   Optional. Whether option name is global or blog specific.
  *                            Default false (blog specific).
  * @return int|bool User meta ID if the option didn't exist, true on successful update,
  *                  false on failure.
  */
-function update_user_option( $user_id, $option_name, $newvalue, $global = false ) {
+function update_user_option( $user_id, $option_name, $newvalue, $is_global = false ) {
 	global $wpdb;
 
-	if ( ! $global ) {
+	if ( ! $is_global ) {
 		$option_name = $wpdb->get_blog_prefix() . $option_name;
 	}
 
@@ -722,7 +722,7 @@ function update_user_option( $user_id, $option_name, $newvalue, $global = false
  * Deletes user option with global blog capability.
  *
  * User options are just like user metadata except that they have support for
- * global blog options. If the 'global' parameter is false, which it is by default
+ * global blog options. If the 'is_global' parameter is false, which it is by default,
  * it will prepend the WordPress table prefix to the option name.
  *
  * @since 3.0.0
@@ -731,16 +731,17 @@ function update_user_option( $user_id, $option_name, $newvalue, $global = false
  *
  * @param int    $user_id     User ID
  * @param string $option_name User option name.
- * @param bool   $global      Optional. Whether option name is global or blog specific.
+ * @param bool   $is_global   Optional. Whether option name is global or blog specific.
  *                            Default false (blog specific).
  * @return bool True on success, false on failure.
  */
-function delete_user_option( $user_id, $option_name, $global = false ) {
+function delete_user_option( $user_id, $option_name, $is_global = false ) {
 	global $wpdb;
 
-	if ( ! $global ) {
+	if ( ! $is_global ) {
 		$option_name = $wpdb->get_blog_prefix() . $option_name;
 	}
+
 	return delete_user_meta( $user_id, $option_name );
 }