diff --git a/server/gameserver/ingamevoice.cc b/server/gameserver/ingamevoice.cc
index eaa79956..8609828f 100644
--- a/server/gameserver/ingamevoice.cc
+++ b/server/gameserver/ingamevoice.cc
@@ -85,6 +85,16 @@ void InGameVoice::OnHumanBeKill(int killer_id, Human* deader)
              {
                  if (a8::TIMER_EXEC_EVENT == event) {
                      DecIntMap(room->GetInGameVoice()->personal_series_kills_, killer_id);
+                 }
+             },
+             &room_->xtimer_attacher_);
+
+        room_->xtimer.SetTimeoutWpEx
+            (
+             SERVER_FRAME_RATE * mt::InGameVoice::s_series_kill_interval,
+             [room = room_, killer_id] (int event, const a8::Args* args)
+             {
+                 if (a8::TIMER_EXEC_EVENT == event) {
                      DecIntMap(room->GetInGameVoice()->personal_nodead_series_kills_, killer_id);
                  }
              },