diff --git a/src/wp-admin/includes/update.php b/src/wp-admin/includes/update.php
index 8c8d8a0747..e01fd28eb3 100644
--- a/src/wp-admin/includes/update.php
+++ b/src/wp-admin/includes/update.php
@@ -240,15 +240,14 @@ function core_update_footer( $msg = '' ) {
 		$cur->current = '';
 	}
 
-	if ( ! isset( $cur->url ) ) {
-		$cur->url = '';
-	}
-
 	if ( ! isset( $cur->response ) ) {
 		$cur->response = '';
 	}
 
-	$is_development_version = preg_match( '/alpha|beta|RC/', $cur->version );
+	// Include an unmodified $wp_version.
+	require ABSPATH . WPINC . '/version.php';
+
+	$is_development_version = preg_match( '/alpha|beta|RC/', $wp_version );
 
 	if ( $is_development_version && 'latest' === $cur->response ) {
 		$cur->response = 'development';