diff --git a/midonet/neutron/plugin.py b/midonet/neutron/plugin.py
index dacbed8..c40eabd 100644
--- a/midonet/neutron/plugin.py
+++ b/midonet/neutron/plugin.py
@@ -198,7 +198,7 @@ def update_network(self, context, id, network):
         return net
 
     @util.handle_api_error
-    @utils.synchronized('midonet-critical-section', external=True)
+    @utils.synchronized('midonet-network-lock', external=True)
     def delete_network(self, context, id):
         """Delete a network and its corresponding MidoNet bridge."""
         LOG.info(_("MidonetPluginV2.delete_network called: id=%r"), id)
@@ -285,7 +285,7 @@ def _process_create_port(self, context, port):
         return new_port
 
     @util.handle_api_error
-    @utils.synchronized('midonet-critical-section', external=True)
+    @utils.synchronized('midonet-port-lock', external=True)
     def create_port(self, context, port):
         """Create a L2 port in Neutron/MidoNet."""
         LOG.info(_("MidonetPluginV2.create_port called: port=%r"), port)
@@ -305,7 +305,7 @@ def create_port(self, context, port):
         return new_port
 
     @util.handle_api_error
-    @utils.synchronized('midonet-critical-section', external=True)
+    @utils.synchronized('midonet-port-lock', external=True)
     def delete_port(self, context, id, l3_port_check=True):
         """Delete a neutron port and corresponding MidoNet bridge port."""
         LOG.info(_("MidonetPluginV2.delete_port called: id=%(id)s "