diff --git a/lucene/src/java/org/apache/lucene/search/IndexSearcher.java b/lucene/src/java/org/apache/lucene/search/IndexSearcher.java
index 81b90f28679..a50d7713978 100644
--- a/lucene/src/java/org/apache/lucene/search/IndexSearcher.java
+++ b/lucene/src/java/org/apache/lucene/search/IndexSearcher.java
@@ -17,6 +17,7 @@ package org.apache.lucene.search;
  * limitations under the License.
  */
 
+import java.io.Closeable;
 import java.io.IOException;
 import java.util.Iterator;
 import java.util.NoSuchElementException;
@@ -67,7 +68,7 @@ import org.apache.lucene.util.ThreadInterruptedException;
  * synchronize on the <code>IndexSearcher</code> instance;
  * use your own (non-Lucene) objects instead.</p>
  */
-public class IndexSearcher {
+public class IndexSearcher implements Closeable {
   final IndexReader reader; // package private for testing!
   private boolean closeReader;
   
@@ -265,6 +266,7 @@ public class IndexSearcher {
    * If the IndexReader was supplied implicitly by specifying a directory, then
    * the IndexReader is closed.
    */
+  @Override
   public void close() throws IOException {
     if (closeReader) {
       reader.close();