diff --git a/wp-includes/load.php b/wp-includes/load.php
index 82df7bb06e..98c6d42a94 100644
--- a/wp-includes/load.php
+++ b/wp-includes/load.php
@@ -334,7 +334,7 @@ function wp_debug_mode() {
 		error_reporting( E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR );
 	}
 
-	if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || wp_doing_ajax() ) {
+	if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || ( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) || wp_doing_ajax() ) {
 		@ini_set( 'display_errors', 0 );
 	}
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b53408dc1f..a7450d8c70 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-alpha-38422';
+$wp_version = '4.7-alpha-38423';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.