diff --git a/L2J_Mobius_Underground/dist/game/data/scripts/handlers/skillconditionhandlers/OpSkillAcquireSkillCondition.java b/L2J_Mobius_Underground/dist/game/data/scripts/handlers/skillconditionhandlers/OpSkillAcquireSkillCondition.java
index 431d4a9c50..d1d6a8af6e 100644
--- a/L2J_Mobius_Underground/dist/game/data/scripts/handlers/skillconditionhandlers/OpSkillAcquireSkillCondition.java
+++ b/L2J_Mobius_Underground/dist/game/data/scripts/handlers/skillconditionhandlers/OpSkillAcquireSkillCondition.java
@@ -39,7 +39,11 @@ public class OpSkillAcquireSkillCondition implements ISkillCondition
 	@Override
 	public boolean canUse(L2Character caster, Skill skill, L2Object target)
 	{
-		final int skillLevel = caster.getSkillLevel(_skillId);
+		if (!target.isCharacter())
+		{
+			return false;
+		}
+		final int skillLevel = ((L2Character) target).getSkillLevel(_skillId);
 		return _hasLearned ? skillLevel != -1 : skillLevel == -1;
 	}
 }