diff --git a/server/CGameHandler.cpp b/server/CGameHandler.cpp
index fbe447bc1..2a44fe769 100644
--- a/server/CGameHandler.cpp
+++ b/server/CGameHandler.cpp
@@ -3432,7 +3432,7 @@ bool CGameHandler::makeBattleAction( BattleAction &ba )
 			//defensive stance //TODO: remove this bonus when stack becomes active
 			SetStackEffect sse;
 			sse.effect.push_back( Bonus(Bonus::STACK_GETS_TURN, Bonus::PRIMARY_SKILL, Bonus::OTHER, 20, -1, PrimarySkill::DEFENSE, Bonus::PERCENT_TO_ALL) );
-			sse.effect.push_back( Bonus(Bonus::STACK_GETS_TURN, Bonus::PRIMARY_SKILL, Bonus::OTHER, gs->curB->stacks.at(ba.stackNumber)->valOfBonuses(Bonus::DEFENSIVE_STANCE),
+			sse.effect.push_back( Bonus(Bonus::STACK_GETS_TURN, Bonus::PRIMARY_SKILL, Bonus::OTHER, gs->curB->battleGetStackByID(ba.stackNumber)->valOfBonuses(Bonus::DEFENSIVE_STANCE),
 				 -1, PrimarySkill::DEFENSE, Bonus::ADDITIVE_VALUE));
 			sse.stacks.push_back(ba.stackNumber);
 			sendAndApply(&sse);