diff --git a/src/main/java/org/apache/lucene/store/XMMapFSDirectory.java b/src/main/java/org/apache/lucene/store/XMMapFSDirectory.java
index 9b9b2c09dd8..132858c6f5f 100644
--- a/src/main/java/org/apache/lucene/store/XMMapFSDirectory.java
+++ b/src/main/java/org/apache/lucene/store/XMMapFSDirectory.java
@@ -27,7 +27,7 @@ import java.io.IOException;
 
 /**
  */
-public class XMMapFSDirectory extends NIOFSDirectory {
+public class XMMapFSDirectory extends MMapDirectory {
 
     private final StoreRateLimiting.Provider rateLimitingProvider;