diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index ae823a3..2a8cd03 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -1493,7 +1493,7 @@ void Human::ProcBuffEffect(Buff* buff)
     case BET_ReleaseDcgr:
         {
             room->xtimer.AddRepeatTimerAndAttach(
-                                                 buff->meta->param1* 1000 / FRAME_RATE_MS,
+                                                 (buff->meta->param1 / 1000) * FRAME_RATE_MS,
                                                  a8::XParams()
                                                  .SetSender(this)
                                                  .SetParam1(buff),
@@ -1505,7 +1505,7 @@ void Human::ProcBuffEffect(Buff* buff)
     case BET_ReleaseFireBomb:
         {
             room->xtimer.AddRepeatTimerAndAttach(
-                                                 buff->meta->param1* 1000 / FRAME_RATE_MS,
+                                                 (buff->meta->param1 / 1000) * FRAME_RATE_MS,
                                                  a8::XParams()
                                                  .SetSender(this)
                                                  .SetParam1(buff),