--- old/src/java.httpclient/share/classes/java/net/http/ResponseHeaders.java	2016-04-25 23:10:27.625374751 +0100
+++ new/src/java.httpclient/share/classes/java/net/http/ResponseHeaders.java	2016-04-25 23:10:27.301374756 +0100
@@ -48,7 +48,7 @@
  *
  * This class is not thread-safe
  */
-class ResponseHeaders implements HttpHeaders1 {
+class ResponseHeaders implements HttpHeaders {
 
     static final int DATA_SIZE = 16 * 1024;  // initial space for headers
     static final int NUM_HEADERS = 50; // initial expected max number of headers
@@ -368,10 +368,6 @@
         return Collections.unmodifiableList(l);
     }
 
-    @Override
-    public void makeUnmodifiable() {
-    }
-
     // Delegates map to HashMap but converts keys to lower case
 
     static class HeaderMap implements Map<String,List<String>> {