From 43a146da6dde0be06ddd27741ba21fc73091e27e Mon Sep 17 00:00:00 2001
From: Vayle <76063792+Valorith@users.noreply.github.com>
Date: Fri, 30 Jan 2026 22:39:11 -0500
Subject: [PATCH] Update zone/spell_effects.cpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 zone/spell_effects.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/zone/spell_effects.cpp b/zone/spell_effects.cpp
index 33090b07f..3ec303d3f 100644
--- a/zone/spell_effects.cpp
+++ b/zone/spell_effects.cpp
@@ -4690,6 +4690,8 @@ void Mob::BuffFadeBySlot(int slot, bool iRecalcBonuses, bool suppress, uint32 su
 			client->ReapplyBuff(slot, true);
 		} else {
 			// Reapply visual/state effects for non-client mobs (pets, NPCs, bots)
+			if (!IsValidSpell(buffs[slot].spellid))
+				return false;
 			const auto& spell = spells[buffs[slot].spellid];
 			for (int i = 0; i < EFFECT_COUNT; i++) {
 				switch (spell.effect_id[i]) {