diff --git a/libraries/plugins/debug_witness/debug_witness.cpp b/libraries/plugins/debug_witness/debug_witness.cpp
index 19cf0f49..17f852c5 100644
--- a/libraries/plugins/debug_witness/debug_witness.cpp
+++ b/libraries/plugins/debug_witness/debug_witness.cpp
@@ -98,13 +98,13 @@ void debug_witness_plugin::plugin_startup()
    // connect needed signals
 
    _applied_block_conn  = db.applied_block.connect([this](const graphene::chain::signed_block& b){ on_applied_block(b); });
-   _changed_objects_conn = db.changed_objects.connect([this](const std::vector<graphene::db::object_id_type>& ids){ on_changed_objects(ids); });
-   _removed_objects_conn = db.removed_objects.connect([this](const std::vector<graphene::db::object_id_type>& ids, const std::vector<const graphene::db::object*>& objs){ on_removed_objects(ids, objs); });
+   _changed_objects_conn = db.changed_objects.connect([this](const std::vector<graphene::db::object_id_type>& ids, const fc::flat_set<graphene::chain::account_id_type>& impacted_accounts){ on_changed_objects(ids, impacted_accounts); });
+   _removed_objects_conn = db.removed_objects.connect([this](const std::vector<graphene::db::object_id_type>& ids, const std::vector<const graphene::db::object*>& objs, const fc::flat_set<graphene::chain::account_id_type>& impacted_accounts){ on_removed_objects(ids, objs, impacted_accounts); });
 
    return;
 }
 
-void debug_witness_plugin::on_changed_objects( const std::vector<graphene::db::object_id_type>& ids )
+void debug_witness_plugin::on_changed_objects( const std::vector<graphene::db::object_id_type>& ids, const fc::flat_set<graphene::chain::account_id_type>& impacted_accounts )
 {
    if( _json_object_stream && (ids.size() > 0) )
    {
@@ -120,7 +120,7 @@ void debug_witness_plugin::on_changed_objects( const std::vector<graphene::db::o
    }
 }
 
-void debug_witness_plugin::on_removed_objects( const std::vector<graphene::db::object_id_type>& ids, const std::vector<const graphene::db::object*> objs )
+void debug_witness_plugin::on_removed_objects( const std::vector<graphene::db::object_id_type>& ids, const std::vector<const graphene::db::object*> objs, const fc::flat_set<graphene::chain::account_id_type>& impacted_accounts )
 {
    if( _json_object_stream )
    {
diff --git a/libraries/plugins/debug_witness/include/graphene/debug_witness/debug_witness.hpp b/libraries/plugins/debug_witness/include/graphene/debug_witness/debug_witness.hpp
index fa387891..907d26ae 100644
--- a/libraries/plugins/debug_witness/include/graphene/debug_witness/debug_witness.hpp
+++ b/libraries/plugins/debug_witness/include/graphene/debug_witness/debug_witness.hpp
@@ -25,8 +25,10 @@
 
 #include <graphene/app/plugin.hpp>
 #include <graphene/chain/database.hpp>
+#include <graphene/chain/protocol/types.hpp>
 
 #include <fc/thread/future.hpp>
+#include <fc/container/flat.hpp>
 
 namespace graphene { namespace debug_witness_plugin {
 
@@ -50,8 +52,8 @@ public:
 
 private:
 
-   void on_changed_objects( const std::vector<graphene::db::object_id_type>& ids );
-   void on_removed_objects( const std::vector<graphene::db::object_id_type>& ids, const std::vector<const graphene::db::object*> objs );
+   void on_changed_objects( const std::vector<graphene::db::object_id_type>& ids, const fc::flat_set<graphene::chain::account_id_type>& impacted_accounts );
+   void on_removed_objects( const std::vector<graphene::db::object_id_type>& ids, const std::vector<const graphene::db::object*> objs, const fc::flat_set<graphene::chain::account_id_type>& impacted_accounts );
    void on_applied_block( const graphene::chain::signed_block& b );
 
    boost::program_options::variables_map _options;