diff --git a/zxingorg/src/test/java/com/google/zxing/web/DoSTrackerTestCase.java b/zxingorg/src/test/java/com/google/zxing/web/DoSTrackerTestCase.java
index 95a87d1f2..b16800121 100644
--- a/zxingorg/src/test/java/com/google/zxing/web/DoSTrackerTestCase.java
+++ b/zxingorg/src/test/java/com/google/zxing/web/DoSTrackerTestCase.java
@@ -31,26 +31,30 @@ public final class DoSTrackerTestCase extends Assert {
     Timer timer = new Timer();
     long timerTimeMS = 200;
     DoSTracker tracker = new DoSTracker(timer, 2, timerTimeMS, 3);
+
+    // 2 requests allowed per time; 3rd should be banned
     assertFalse(tracker.isBanned("A"));
     assertFalse(tracker.isBanned("A"));
     assertTrue(tracker.isBanned("A"));
 
+    // After max 3 others are tracked, A should be reset/evicted and un-ban
     assertFalse(tracker.isBanned("B"));
     assertFalse(tracker.isBanned("C"));
     assertFalse(tracker.isBanned("D"));
     assertFalse(tracker.isBanned("A"));
 
+    // After building up a ban again, and letting plenty of time elapse, should un-ban
     assertFalse(tracker.isBanned("A"));
     assertTrue(tracker.isBanned("A"));
     Thread.sleep(timerTimeMS * 3);
     assertFalse(tracker.isBanned("A"));
 
     assertFalse(tracker.isBanned("A"));
-    assertTrue(tracker.isBanned("A"));
-    assertTrue(tracker.isBanned("A"));
-    assertTrue(tracker.isBanned("A"));
-    assertTrue(tracker.isBanned("A"));
-    assertTrue(tracker.isBanned("A"));
+    // Build up a lot of hits
+    for (int i = 0; i < 10; i++) {
+      assertTrue(tracker.isBanned("A"));
+    }
+    // After one interval, should still have enough hits to be banned
     Thread.sleep(timerTimeMS * 2);
     assertTrue(tracker.isBanned("A"));
   }