diff --git a/examples/cluster.py b/examples/cluster.py
index 79d2eb0..8171361 100755
--- a/examples/cluster.py
+++ b/examples/cluster.py
@@ -292,6 +292,11 @@ class RemoteOVSSwitch( RemoteMixin, OVSSwitch ):
         return ( StrictVersion( cls.OVSVersions[ self.server ] ) <
                  StrictVersion( '1.10' ) )
 
+    @classmethod
+    def batchShutdown( cls, *args, **kwargs ):
+        "Not implemented yet"
+        return False
+
 
 class RemoteLink( Link ):
     "A RemoteLink is a link between nodes which may be on different servers"
diff --git a/mininet/net.py b/mininet/net.py
index 5289ee5..aa7b569 100755
--- a/mininet/net.py
+++ b/mininet/net.py
@@ -505,8 +505,8 @@ class Mininet( object ):
         for swclass, switches in groupby(
                 sorted( self.switches, key=type ), type ):
             switches = tuple( switches )
-            if hasattr( swclass, 'batchShutdown' ):
-                swclass.batchShutdown( switches )
+            if ( hasattr( swclass, 'batchShutdown' ) and
+                 swclass.batchShutdown( switches ) ):
                 stopped.update( { s: s for s in switches } )
         for switch in self.switches:
             info( switch.name + ' ' )
diff --git a/mininet/node.py b/mininet/node.py
index c9485f2..4117c0c 100644
--- a/mininet/node.py
+++ b/mininet/node.py
@@ -1103,6 +1103,7 @@ class OVSSwitch( Switch ):
         quietRun( 'ovs-vsctl ' +
                   ' -- '.join( '--if-exists del-br %s' % s
                                for s in switches ) )
+        return True
 
     def dpctl( self, *args ):
         "Run ovs-ofctl command"