@@ -977,6 +977,7 @@ func (s *DockerSwarmSuite) TestSwarmRotateUnlockKey(c *check.C) {

 		// Strip \n

 		newUnlockKey := outs[:len(outs)-1]

 		c.Assert(newUnlockKey, checker.Not(checker.Equals), "")

+		c.Assert(newUnlockKey, checker.Not(checker.Equals), unlockKey)

 		c.Assert(d.Restart(), checker.IsNil)

@@ -1026,5 +1027,7 @@ func (s *DockerSwarmSuite) TestSwarmRotateUnlockKey(c *check.C) {

 		outs, err = d.Cmd("node", "ls")

 		c.Assert(err, checker.IsNil)

 		c.Assert(outs, checker.Not(checker.Contains), "Swarm is encrypted and needs to be unlocked")

+

+		unlockKey = newUnlockKey

 	}

 }