diff --git a/src/test/java/org/elasticsearch/common/lucene/LuceneTest.java b/src/test/java/org/elasticsearch/common/lucene/LuceneTest.java
index 816409675af..18d77305a40 100644
--- a/src/test/java/org/elasticsearch/common/lucene/LuceneTest.java
+++ b/src/test/java/org/elasticsearch/common/lucene/LuceneTest.java
@@ -203,7 +203,7 @@ public class LuceneTest extends ElasticsearchTestCase {
         assertEquals(s.search(new TermQuery(new Term("id", "4")), 1).totalHits, 0);
 
         for (String file : dir.listAll()) {
-            assertFalse("unexpected file: " + file, file.equals("segments_3") || file.startsWith("_2") || file.startsWith("extra"));
+            assertFalse("unexpected file: " + file, file.equals("segments_3") || file.startsWith("_2"));
         }
         open.close();
         dir.close();