diff --git a/wp-admin/customize.php b/wp-admin/customize.php
index b1485d1f46..1faf371cd9 100644
--- a/wp-admin/customize.php
+++ b/wp-admin/customize.php
@@ -63,7 +63,7 @@ $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=0.8, minimum-scale=0.5, maximum-scale=1.2" /><?php
 endif;
 
 $is_ios = wp_is_mobile() && preg_match( '/iPad|iPod|iPhone/', $_SERVER['HTTP_USER_AGENT'] );