diff --git a/wp-includes/update.php b/wp-includes/update.php
index 27b0d0761..3b710569f 100644
--- a/wp-includes/update.php
+++ b/wp-includes/update.php
@@ -40,7 +40,7 @@ function wp_version_check() {
 	set_transient( 'update_core', $current );
 
 	if ( method_exists( $wpdb, 'db_version' ) )
-		$mysql_version = preg_replace('/[^0-9.].*/', '', $wpdb->db_version($wpdb->users));
+		$mysql_version = preg_replace('/[^0-9.].*/', '', $wpdb->db_version());
 	else
 		$mysql_version = 'N/A';
 	$local_package = isset( $wp_local_package )? $wp_local_package : '';