Index: modules/node.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/node.module,v
retrieving revision 1.600
diff -u -p -r1.600 node.module
--- modules/node.module	10 Feb 2006 05:25:57 -0000	1.600
+++ modules/node.module	12 Feb 2006 21:37:16 -0000
@@ -1323,6 +1323,7 @@ function node_revision_revert($nid, $rev
     if ($node->vid) {
       $node->revision = 1;
       $node->log = t('Copy of the revision from %date.', array('%date' => theme('placeholder', format_date($node->revision_timestamp))));
+      $node->taxonomy = array_keys($node->taxonomy);
 
       node_save($node);