diff --git a/AI/BattleAI/BattleExchangeVariant.cpp b/AI/BattleAI/BattleExchangeVariant.cpp
index 8726fda7e..0cffe63f5 100644
--- a/AI/BattleAI/BattleExchangeVariant.cpp
+++ b/AI/BattleAI/BattleExchangeVariant.cpp
@@ -296,7 +296,7 @@ ReachabilityInfo getReachabilityWithEnemyBypass(
 				continue;
 
 			auto dmg = damageCache.getOriginalDamage(activeStack, unit, state);
-			auto turnsToKill = unit->getAvailableHealth() / dmg;
+			auto turnsToKill = unit->getAvailableHealth() / std::max(dmg, (int64_t)1);
 
 			vstd::amin(turnsToKill, 100);