diff --git a/src/wp-admin/upgrade.php b/src/wp-admin/upgrade.php
index 44af8a2520..9d8a50e869 100644
--- a/src/wp-admin/upgrade.php
+++ b/src/wp-admin/upgrade.php
@@ -95,7 +95,7 @@ switch ( $step ) :
 <h2><?php _e( 'Database Update Required' ); ?></h2>
 <p><?php _e( 'WordPress has been updated! Before we send you on your way, we have to update your database to the newest version.' ); ?></p>
 <p><?php _e( 'The database update process may take a little while, so please be patient.' ); ?></p>
-<p class="step"><a class="button button-large" href="upgrade.php?step=1&amp;backto=<?php echo $goback; ?>"><?php _e( 'Update WordPress Database' ); ?></a></p>
+<p class="step"><a class="button button-large button-primary" href="upgrade.php?step=1&amp;backto=<?php echo $goback; ?>"><?php _e( 'Update WordPress Database' ); ?></a></p>
 <?php
 		break;
 	case 1: