diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 1bee990..581d021 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -2021,7 +2021,9 @@ void Human::CheckSkinTank()
                 return;
             }
             hum->last_tank_attacker->self_collider_->rad = old_rad;
-            hum->DecHP(MetaMgr::Instance()->tank_damage2,
+            float def = hum->def + hum->buff.def_add;
+            float finaly_dmg = MetaMgr::Instance()->tank_damage2 * (1 - def/MetaMgr::Instance()->K);
+            hum->DecHP(finaly_dmg,
                        hum->last_tank_attacker->entity_uniid,
                        hum->last_tank_attacker->name,
                        VW_Tank);
@@ -2047,7 +2049,9 @@ void Human::CheckSkinTank()
         for (Human* hum : objects) {
             hum->last_tank_attacker = this;
             hum->last_tank_attack_idx = App::Instance()->NewUuid();
-            hum->DecHP(MetaMgr::Instance()->tank_damage1,
+            float def = hum->def + hum->buff.def_add;
+            float finaly_dmg = MetaMgr::Instance()->tank_damage2 * (1 - def/MetaMgr::Instance()->K);
+            hum->DecHP(finaly_dmg,
                        entity_uniid,
                        name,
                        VW_Tank);