diff --git a/src/calibre/srv/handler.py b/src/calibre/srv/handler.py
index 9633a3df44..c2793bc093 100644
--- a/src/calibre/srv/handler.py
+++ b/src/calibre/srv/handler.py
@@ -62,7 +62,7 @@ class LibraryBroker(object):
 
     def close(self):
         for db in self.lmap.itervalues():
-            db.close()
+            getattr(db, 'close', lambda : None)()
         self.lmap = {}
 
 class Context(object):