Index: src/wp-includes/class-wp-customize-nav-menus.php
===================================================================
--- src/wp-includes/class-wp-customize-nav-menus.php	(revision 37404)
+++ src/wp-includes/class-wp-customize-nav-menus.php	(working copy)
@@ -512,11 +512,13 @@
 		$locations     = get_registered_nav_menus();
 		$num_locations = count( array_keys( $locations ) );
 		if ( 1 == $num_locations ) {
-			$description = '<p>' . __( 'Your theme supports one menu. Select which menu you would like to use.' );
+			$description = '<p>' . __( 'Your theme supports one menu. Select which menu you would like to use.' ) . '</p>';
 		} else {
-			$description = '<p>' . sprintf( _n( 'Your theme supports %s menu. Select which menu appears in each location.', 'Your theme supports %s menus. Select which menu appears in each location.', $num_locations ), number_format_i18n( $num_locations ) );
+			$description = '<p>' . sprintf( _n( 'Your theme supports %s menu. Select which menu appears in each location.', 'Your theme supports %s menus. Select which menu appears in each location.', $num_locations ), number_format_i18n( $num_locations ) ) . '</p>';
 		}
-		$description  .= '</p><p>' . __( 'You can also place menus in widget areas with the Custom Menu widget.' ) . '</p>';
+		if ( current_theme_supports( 'widgets' ) ) {
+			$description .= '<p>' . sprintf( __( 'You can also place menus in <a href="%s">widget areas</a> with the &#8220;Custom Menu&#8221; widget.' ), "javascript:wp.customize.panel( 'widgets' ).focus();" ) . '</p>';
+		}
 
 		$this->manager->add_section( 'menu_locations', array(
 			'title'       => __( 'Menu Locations' ),