BoundedCounterNotificationTest random failures

[ERROR] testThreshold(org.infinispan.counter.BoundedCounterNotificationTest)  Time elapsed: 0.026 s  <<< FAILURE!
java.lang.AssertionError: Wrong new value for event: CounterEventImpl{oldValue=-2, oldState=VALID, newValue=-1, newState=VALID}. expected:<-2> but was:<-1>
	at org.testng.AssertJUnit.fail(AssertJUnit.java:59)
	at org.testng.AssertJUnit.failNotEquals(AssertJUnit.java:364)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:80)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:170)
	at org.infinispan.counter.AbstractCounterNotificationTest$ListenerQueue.assertEvent(AbstractCounterNotificationTest.java:183)
	at org.infinispan.counter.BoundedCounterNotificationTest.testThreshold(BoundedCounterNotificationTest.java:62)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)