diff --git a/test/zutil/struct/TimedHashSetTest.java b/test/zutil/struct/TimedHashSetTest.java
index b1a2a49..ced5719 100755
--- a/test/zutil/struct/TimedHashSetTest.java
+++ b/test/zutil/struct/TimedHashSetTest.java
@@ -51,7 +51,7 @@ public class TimedHashSetTest {
         TimedHashSet set = new TimedHashSet(10);
         set.add(ENTRY);
         assertTrue(set.contains(ENTRY));
-        Thread.sleep(10);
+        Thread.sleep(15);
         assertFalse(set.contains(ENTRY));
     }