diff --git a/wp-includes/customize/class-wp-customize-site-icon-control.php b/wp-includes/customize/class-wp-customize-site-icon-control.php
index ee2504e834..5863f6e382 100644
--- a/wp-includes/customize/class-wp-customize-site-icon-control.php
+++ b/wp-includes/customize/class-wp-customize-site-icon-control.php
@@ -63,7 +63,7 @@ class WP_Customize_Site_Icon_Control extends WP_Customize_Cropped_Image_Control
 			<div class="container">
 				<div class="site-icon-preview">
 					<div class="favicon-preview">
-						<img src="images/browser.png" class="browser-preview" width="182" alt="<?php esc_attr_e( 'Browser interface preview' ); ?>" />
+						<img src="<?php echo esc_url( admin_url( 'images/browser.png' ) ); ?>" class="browser-preview" width="182" alt="<?php esc_attr_e( 'Browser interface preview' ); ?>" />
 
 						<div class="favicon">
 							<img id="preview-favicon" src="{{ data.attachment.sizes.full.url }}" alt="<?php esc_attr_e( 'Preview as a browser icon' ); ?>"/>
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 42044b2ff8..ca8e14bd45 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-beta3-36947';
+$wp_version = '4.5-beta3-36948';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.