From c33d7638275aa8063bdd25df9c267021311c404d Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 27 Jun 2011 08:16:42 -0600
Subject: [PATCH] ...

---
 src/calibre/gui2/tag_browser/view.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/calibre/gui2/tag_browser/view.py b/src/calibre/gui2/tag_browser/view.py
index 64c08ea019..1fad4eb9a3 100644
--- a/src/calibre/gui2/tag_browser/view.py
+++ b/src/calibre/gui2/tag_browser/view.py
@@ -499,6 +499,8 @@ class TagsView(QTreeView): # {{{
             return
         src_is_tb = event.mimeData().hasFormat('application/calibre+from_tag_browser')
         item = index.data(Qt.UserRole).toPyObject()
+        if item.type == TagTreeItem.ROOT:
+            return
         flags = self._model.flags(index)
         if item.type == TagTreeItem.TAG and flags & Qt.ItemIsDropEnabled:
             self.setDropIndicatorShown(not src_is_tb)