diff --git a/src/calibre/ebooks/metadata/sources/base.py b/src/calibre/ebooks/metadata/sources/base.py
index d9eb5a9ee3..56144e5b56 100644
--- a/src/calibre/ebooks/metadata/sources/base.py
+++ b/src/calibre/ebooks/metadata/sources/base.py
@@ -449,6 +449,7 @@ class Source(Plugin):
             self.log.exception('Failed to download cover from: %r'%url)
 
     # }}}
+
     # Metadata API {{{
     def get_book_url(self, identifiers):
         '''