diff --git a/wp-includes/class-wp-customize-manager.php b/wp-includes/class-wp-customize-manager.php
index daa15e655f..3ec62ba366 100644
--- a/wp-includes/class-wp-customize-manager.php
+++ b/wp-includes/class-wp-customize-manager.php
@@ -1855,7 +1855,7 @@ final class WP_Customize_Manager {
 
 		$this->add_control( new WP_Customize_Site_Icon_Control( $this, 'site_icon', array(
 			'label'       => __( 'Site Icon' ),
-			'description' => __( 'The Site Icon is used as a browser and app icon for your site. Icons must be square, and at least 512px wide and tall.' ),
+			'description' => __( 'The Site Icon is used as a browser and app icon for your site. Icons must be square, and at least <strong>512</strong> pixels wide and tall.' ),
 			'section'     => 'title_tagline',
 			'priority'    => 60,
 			'height'      => 512,
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a194334377..d6644c1a4b 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-35891';
+$wp_version = '4.5-alpha-35892';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.