From 6eb304c3be2a0b298a42c804eee5a26add6b71fe Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 23 Nov 2015 21:22:54 +0530
Subject: [PATCH] Fix a bug in the counting of ratings from legacy databases

---
 src/calibre/db/categories.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/db/categories.py b/src/calibre/db/categories.py
index 37138895f0..f209138f54 100644
--- a/src/calibre/db/categories.py
+++ b/src/calibre/db/categories.py
@@ -161,7 +161,7 @@ def get_categories(dbcache, sort='name', book_ids=None, first_letter_sort=False)
         for x in tuple(categories['rating']):
             if r.name == x.name and r.id != x.id:
                 r.id_set |= x.id_set
-                r.count = r.count + x.count
+                r.count = len(r.id_set)
                 categories['rating'].remove(x)
                 break