diff --git a/updates/3.00-to-x.xx.mysql b/updates/3.00-to-x.xx.mysql
index a78a24e3eb67..020012a46c3a 100644
--- a/updates/3.00-to-x.xx.mysql
+++ b/updates/3.00-to-x.xx.mysql
@@ -102,4 +102,4 @@ ALTER TABLE story ADD KEY nid (nid);
 ALTER TABLE blog ADD KEY nid (nid);
 ALTER TABLE page ADD KEY nid (nid);
 ALTER TABLE forum ADD KEY nid (nid);
-ALTER TABLE book um ADD KEY nid (nid);
+ALTER TABLE book ADD KEY nid (nid);