Index: lucene/src/java/org/apache/lucene/search/FieldDoc.java
===================================================================
--- lucene/src/java/org/apache/lucene/search/FieldDoc.java	(revision 939534)
+++ lucene/src/java/org/apache/lucene/search/FieldDoc.java	(working copy)
@@ -70,6 +70,6 @@
           }
     sb.setLength(sb.length() - 2); // discard last ", "
     sb.append("]");
-    return super.toString();
+    return sb.toString();
   }
 }