diff --git a/lucene/core/src/test/org/apache/lucene/util/StressRamUsageEstimator.java b/lucene/core/src/test/org/apache/lucene/util/TestStressRamUsageEstimator.java
similarity index 97%
rename from lucene/core/src/test/org/apache/lucene/util/StressRamUsageEstimator.java
rename to lucene/core/src/test/org/apache/lucene/util/TestStressRamUsageEstimator.java
index cb874e3b845..759eeefe0cb 100644
--- a/lucene/core/src/test/org/apache/lucene/util/StressRamUsageEstimator.java
+++ b/lucene/core/src/test/org/apache/lucene/util/TestStressRamUsageEstimator.java
@@ -19,7 +19,7 @@ package org.apache.lucene.util;
 /**
  * Estimates how {@link RamUsageEstimator} estimates physical memory consumption of Java objects.
  */
-public class StressRamUsageEstimator extends LuceneTestCase {
+public class TestStressRamUsageEstimator extends LuceneTestCase {
   static class Entry {
     Object o;
     Entry next;