diff --git a/core/api/src/test/java/org/onlab/onos/event/AbstractEventAccumulatorTest.java b/core/api/src/test/java/org/onlab/onos/event/AbstractEventAccumulatorTest.java
index 9e561bf..ed18195 100644
--- a/core/api/src/test/java/org/onlab/onos/event/AbstractEventAccumulatorTest.java
+++ b/core/api/src/test/java/org/onlab/onos/event/AbstractEventAccumulatorTest.java
@@ -45,15 +45,18 @@
     public void timeTrigger() {
         TestAccumulator accumulator = new TestAccumulator();
         accumulator.add(new TestEvent(FOO, "a"));
-        delay(40);
+        delay(30);
         assertTrue("should not have fired yet", accumulator.batch.isEmpty());
         accumulator.add(new TestEvent(FOO, "b"));
-        delay(40);
+        delay(30);
         assertTrue("should not have fired yet", accumulator.batch.isEmpty());
         accumulator.add(new TestEvent(FOO, "c"));
-        delay(40);
+        delay(30);
+        assertTrue("should not have fired yet", accumulator.batch.isEmpty());
+        accumulator.add(new TestEvent(FOO, "d"));
+        delay(30);
         assertFalse("should have fired", accumulator.batch.isEmpty());
-        assertEquals("incorrect batch", "abc", accumulator.batch);
+        assertEquals("incorrect batch", "abcd", accumulator.batch);
     }
 
     @Test