diff --git a/themes/wporg-5ftf/functions.php b/themes/wporg-5ftf/functions.php
index 2e8bcd3..50b3974 100644
--- a/themes/wporg-5ftf/functions.php
+++ b/themes/wporg-5ftf/functions.php
@@ -115,7 +115,7 @@ add_action( 'after_setup_theme', __NAMESPACE__ . '\setup' );
  * @global int $content_width
  */
 function content_width() {
-	$GLOBALS['content_width'] = 960;
+	$GLOBALS['content_width'] = 640;
 }
 add_action( 'after_setup_theme', __NAMESPACE__ . '\content_width', 0 );