diff --git a/server/gameserver/battledatacontext.cc b/server/gameserver/battledatacontext.cc
index c0f178cb..287eb660 100644
--- a/server/gameserver/battledatacontext.cc
+++ b/server/gameserver/battledatacontext.cc
@@ -11,6 +11,7 @@
 #include "bullet.h"
 #include "app.h"
 #include "room.h"
+#include "explosion.h"
 
 #include "attrhelper.h"
 
@@ -548,7 +549,7 @@ float BattleDataContext::CalcDmg(Obstacle* target, IBullet* bullet)
 
 float BattleDataContext::CalcDmg(Explosion* e)
 {
-    float finaly_dmg = (1 - GetDef() / 1000) / 2 * 100;
+    float finaly_dmg = e->GetDmg();
 #ifdef DEBUG
     if (owner_.Get()->IsPlayer()) {
         std::string data = a8::Format