diff --git a/contrib/ant/src/java/org/apache/lucene/ant/HtmlDocument.java b/contrib/ant/src/java/org/apache/lucene/ant/HtmlDocument.java
index 2bd6e6e7524..956523e433c 100644
--- a/contrib/ant/src/java/org/apache/lucene/ant/HtmlDocument.java
+++ b/contrib/ant/src/java/org/apache/lucene/ant/HtmlDocument.java
@@ -60,8 +60,13 @@ public class HtmlDocument {
         Tidy tidy = new Tidy();
         tidy.setQuiet(true);
         tidy.setShowWarnings(false);
-        org.w3c.dom.Document root =
-                tidy.parseDOM(new FileInputStream(file), null);
+        org.w3c.dom.Document root = null;
+        InputStream is = new FileInputStream(file);
+        try {
+          root =  tidy.parseDOM(is, null);
+        } finally {
+          is.close();
+        }
         rawDoc = root.getDocumentElement();
     }