diff --git a/modules/book/book.module b/modules/book/book.module
index 82d38f7..610decc 100644
--- a/modules/book/book.module
+++ b/modules/book/book.module
@@ -279,9 +279,9 @@ function book_block_view($delta = '') {
   }
   elseif ($current_bid) {
     // Only display this block when the user is browsing a book.
-    $select = db_select('node');
-    $select->addField('node', 'title');
-    $select->condition('nid', $node->book['bid']);
+    $select = db_select('node', 'n');
+    $select->addField('n', 'title');
+    $select->condition('n.nid', $node->book['bid']);
     $select->addTag('node_access');
     $title = $select->execute()->fetchField();
     // Only show the block if the user has view access for the top-level node.