--- old/agent/src/share/classes/sun/jvm/hotspot/memory/BinaryTreeDictionary.java	Thu Jul  4 18:02:33 2013
+++ new/agent/src/share/classes/sun/jvm/hotspot/memory/BinaryTreeDictionary.java	Thu Jul  4 18:02:30 2013
@@ -40,8 +40,8 @@
    }
 
    private static synchronized void initialize(TypeDataBase db) {
-      Type type = db.lookupType("BinaryTreeDictionary");
-      totalSizeField = type.getCIntegerField("_totalSize");
+      Type type = db.lookupType("BinaryTreeDictionary<FreeChunk>");
+      totalSizeField = type.getCIntegerField("_total_size");
    }
 
    // Fields