diff --git a/server/imserver/dbhelper.cc b/server/imserver/dbhelper.cc
index f7d3dd4..b934fa3 100644
--- a/server/imserver/dbhelper.cc
+++ b/server/imserver/dbhelper.cc
@@ -149,3 +149,10 @@ void DBHelper::AddEvent(const std::string& sender_id,
          crc32_code
          );
 }
+
+void DBHelper::SetEventStatus(long long idx,
+                              const std::string& target_id,
+                              int status)
+{
+
+}
diff --git a/server/imserver/dbhelper.h b/server/imserver/dbhelper.h
index 762f7cd..b57b109 100644
--- a/server/imserver/dbhelper.h
+++ b/server/imserver/dbhelper.h
@@ -27,5 +27,8 @@ class DBHelper : public a8::Singleton<DBHelper>
                   const std::string& target_id,
                   const std::string& event_name,
                   const std::string& event_data);
+    void SetEventStatus(long long idx,
+                        const std::string& target_id,
+                        int status);
 
 };