diff --git a/wp-admin/customize.php b/wp-admin/customize.php
index 51db8b3ebb..c341e4c35d 100644
--- a/wp-admin/customize.php
+++ b/wp-admin/customize.php
@@ -71,7 +71,7 @@ $body_class = 'wp-core-ui wp-customizer js';
 if ( wp_is_mobile() ) :
 	$body_class .= ' mobile';
 
-	?><meta name="viewport" id="viewport-meta" content="width=device-width, initial-scale=0.8, minimum-scale=0.5, maximum-scale=1.2" /><?php
+	?><meta name="viewport" id="viewport-meta" content="width=device-width, initial-scale=1.0, minimum-scale=0.5, maximum-scale=1.2" /><?php
 endif;
 
 $is_ios = wp_is_mobile() && preg_match( '/iPad|iPod|iPhone/', $_SERVER['HTTP_USER_AGENT'] );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 272dff565c..15d74f4039 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-beta3-31920';
+$wp_version = '4.2-beta3-31921';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.