diff --git a/wp-content/themes/twentyfifteen/inc/customizer.php b/wp-content/themes/twentyfifteen/inc/customizer.php
index ad03a6cef1..6624e660f2 100644
--- a/wp-content/themes/twentyfifteen/inc/customizer.php
+++ b/wp-content/themes/twentyfifteen/inc/customizer.php
@@ -28,9 +28,8 @@ function twentyfifteen_customize_register( $wp_customize ) {
 	) );
 
 	$wp_customize->add_setting( 'color_scheme_css', array(
-		'default'           => '',
-		'sanitize_callback' => 'esc_html',
-		'transport'         => 'postMessage',
+		'default'   => '',
+		'transport' => 'postMessage',
 	) );
 
 	$wp_customize->add_control( 'color_scheme', array(