diff --git a/wp-includes/class-wp-fatal-error-handler.php b/wp-includes/class-wp-fatal-error-handler.php
index a461281bec..fce925a456 100644
--- a/wp-includes/class-wp-fatal-error-handler.php
+++ b/wp-includes/class-wp-fatal-error-handler.php
@@ -31,7 +31,7 @@ class WP_Fatal_Error_Handler {
 		}
 
 		// Do not trigger the fatal error handler while updates are being installed.
-		if ( wp_in_maintenance_mode() ) {
+		if ( wp_is_maintenance_mode() ) {
 			return;
 		}
 
diff --git a/wp-includes/load.php b/wp-includes/load.php
index 51fe392a20..70b2188c4b 100644
--- a/wp-includes/load.php
+++ b/wp-includes/load.php
@@ -154,7 +154,7 @@ function wp_favicon_request() {
  */
 function wp_maintenance() {
 	// Return if maintenance mode is disabled.
-	if ( ! wp_in_maintenance_mode() ) {
+	if ( ! wp_is_maintenance_mode() ) {
 		return;
 	}
 
@@ -189,7 +189,7 @@ function wp_maintenance() {
  *
  * @return bool True if maintenance mode is enabled, false otherwise.
  */
-function wp_in_maintenance_mode() {
+function wp_is_maintenance_mode() {
 	global $upgrading;
 
 	if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() ) {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 87f2ba6fc7..6ad3ea9cba 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47870';
+$wp_version = '5.5-alpha-47871';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.