diff --git a/openerp/netsvc.py b/openerp/netsvc.py
index 6e477f3ea36..2763f79a6cf 100644
--- a/openerp/netsvc.py
+++ b/openerp/netsvc.py
@@ -57,6 +57,10 @@ def close_socket(sock):
     try:
         sock.shutdown(socket.SHUT_RDWR)
     except socket.error, e:
+        if e.errno == errno.EBADF:
+            # Werkzeug > 0.9.6 closes the socket itself (see commit
+            # https://github.com/mitsuhiko/werkzeug/commit/4d8ca089)
+            return
         # On OSX, socket shutdowns both sides if any side closes it
         # causing an error 57 'Socket is not connected' on shutdown
         # of the other side (or something), see