diff --git a/zone/spells.cpp b/zone/spells.cpp
index 1bb066f97..031e886a6 100644
--- a/zone/spells.cpp
+++ b/zone/spells.cpp
@@ -148,7 +148,7 @@ bool Mob::CastSpell(uint16 spell_id, uint16 target_id, uint16 slot,
 	uint32 timer, uint32 timer_duration, uint32 type, int16 *resist_adjust)
 {
 	Log.Out(Logs::Detail, Logs::Spells, "CastSpell called for spell %s (%d) on entity %d, slot %d, time %d, mana %d, from item slot %d",
-		spells[spell_id].name, spell_id, target_id, slot, cast_time, mana_cost, (item_slot==0xFFFFFFFF)?999:item_slot);
+		(IsValidSpell(spell_id))?spells[spell_id].name:"UNKNOWN SPELL", spell_id, target_id, slot, cast_time, mana_cost, (item_slot==0xFFFFFFFF)?999:item_slot);
 
 	if(casting_spell_id == spell_id)
 		ZeroCastingVars();