diff --git a/tests/nicira_dec_ttl.py b/tests/nicira_dec_ttl.py
index 32d3501..a35d97a 100644
--- a/tests/nicira_dec_ttl.py
+++ b/tests/nicira_dec_ttl.py
@@ -7,20 +7,6 @@
 
 from oftest.testutils import *
 
-class action_nx_dec_ttl(ofp.action.vendor):
-    def __init__(self):
-        ofp.action.vendor.__init__(self)
-        self.vendor = 0x00002320
-
-    def pack(self):
-        return ofp.action.vendor.pack(self) + struct.pack("!HHL", 18, 0x0, 0x0)
-
-    def __len__(self):
-        return 16
-
-    def show(self, prefix=''):
-        return prefix + 'dec_ttl: ' + '\n' + ofp.action.vendor.show(self)
-
 @nonstandard
 class TtlDecrement(base_tests.SimpleDataPlane):
     def runTest(self):
@@ -35,17 +21,17 @@
         flow_match_test(self, config["port_map"],
                         pkt=simple_tcp_packet(pktlen=100, ip_ttl=2),
                         exp_pkt=simple_tcp_packet(pktlen=100, ip_ttl=1),
-                        action_list=[action_nx_dec_ttl()])
+                        action_list=[ofp.action.nicira_dec_ttl()])
 
         outpkt = simple_tcp_packet(pktlen=100, ip_ttl=3)
         msg = ofp.message.packet_out(in_port=ofp.OFPP_NONE,
                                      data=str(outpkt),
                                      actions=[
-                                         action_nx_dec_ttl(),
+                                         ofp.action.nicira_dec_ttl(),
                                          ofp.action.output(port=portA),
-                                         action_nx_dec_ttl(),
+                                         ofp.action.nicira_dec_ttl(),
                                          ofp.action.output(port=portB),
-                                         action_nx_dec_ttl(),
+                                         ofp.action.nicira_dec_ttl(),
                                          ofp.action.output(port=portC)])
         self.controller.message_send(msg)