diff --git a/server/gameserver/player.cc b/server/gameserver/player.cc
index 6e82f51c..9e723cb3 100644
--- a/server/gameserver/player.cc
+++ b/server/gameserver/player.cc
@@ -1529,10 +1529,10 @@ void Player::UpdateAiming()
                 } else if (power_idx + 1 == p_weapon->meta->_power_charge.size()) {
                 } else {
                     long long passed_time = (room->GetFrameNo() - aiming_frameno) * FRAME_RATE_MS;
-                    if (passed_time >= std::get<0>(p_weapon->meta->_power_charge[power_idx + 1])) {
+                    if (passed_time >= std::get<0>(p_weapon->meta->_power_charge.at(power_idx + 1))) {
                         ++power_idx;
                         ClearAimingBuffs();
-                        int buff_id = std::get<2>(p_weapon->meta->_power_charge[power_idx]);
+                        int buff_id = std::get<2>(p_weapon->meta->_power_charge.at(power_idx));
                         MustBeAddBuff(this, buff_id);
                         aiming_buffs.push_back(buff_id);
                     }