diff --git a/src/calibre/web/fetch/simple.py b/src/calibre/web/fetch/simple.py
index d796ba0611..8cb22c964c 100644
--- a/src/calibre/web/fetch/simple.py
+++ b/src/calibre/web/fetch/simple.py
@@ -441,7 +441,7 @@ class RecursiveFetcher(object):
 
     def localize_link(self, tag, key, path):
         parts = urlparse.urlsplit(tag[key])
-        suffix = '#'+parts.fragment if parts.fragment else ''
+        suffix = ('#'+parts.fragment) if parts.fragment else ''
         tag[key] = path+suffix
 
     def process_return_links(self, soup, baseurl):