diff --git a/zone/corpse.cpp b/zone/corpse.cpp
index 9bdedc492..e04fd6a9d 100644
--- a/zone/corpse.cpp
+++ b/zone/corpse.cpp
@@ -1279,7 +1279,7 @@ void Corpse::LootItem(Client *client, const EQApplicationPacket *app)
 		if (zone && zone->GetInstanceID() != 0)
 		{
 			// expeditions may prevent looting based on client's lockouts
-			auto expedition = Expedition::FindCachedExpeditionByInstanceID(zone->GetInstanceID());
+			auto expedition = Expedition::FindCachedExpeditionByZoneInstance(zone->GetZoneID(), zone->GetInstanceID());
 			if (expedition && !expedition->CanClientLootCorpse(client, GetNPCTypeID(), GetID()))
 			{
 				client->MessageString(Chat::Red, LOOT_NOT_ALLOWED, inst->GetItem()->Name);
diff --git a/zone/embparser_api.cpp b/zone/embparser_api.cpp
index 706e7a9a0..e402e1325 100644
--- a/zone/embparser_api.cpp
+++ b/zone/embparser_api.cpp
@@ -6070,7 +6070,7 @@ XS(XS__get_expedition) {
 	Expedition* RETVAL = nullptr;
 	if (zone && zone->GetInstanceID() != 0)
 	{
-		RETVAL = Expedition::FindCachedExpeditionByInstanceID(zone->GetInstanceID());
+		RETVAL = Expedition::FindCachedExpeditionByZoneInstance(zone->GetZoneID(), zone->GetInstanceID());
 	}
 
 	EXTEND(sp, 1); // grow stack, function had 0 arguments
@@ -6101,16 +6101,17 @@ XS(XS__get_expedition_by_char_id) {
 	XSRETURN(1);
 }
 
-XS(XS__get_expedition_by_instance_id);
-XS(XS__get_expedition_by_instance_id) {
+XS(XS__get_expedition_by_zone_instance);
+XS(XS__get_expedition_by_zone_instance) {
 	dXSARGS;
-	if (items != 1) {
-		Perl_croak(aTHX_ "Usage: quest::GetExpeditionByInstanceID(uint16 instance_id)");
+	if (items != 2) {
+		Perl_croak(aTHX_ "Usage: quest::GetExpeditionByZoneInstance(uint16 zone_id, uint16 instance_id)");
 	}
 
-	uint16 instance_id = (uint16)SvUV(ST(0));
+	uint16 zone_id = (uint16)SvUV(ST(0));
+	uint16 instance_id = (uint16)SvUV(ST(1));
 
-	Expedition* RETVAL = Expedition::FindCachedExpeditionByInstanceID(instance_id);
+	Expedition* RETVAL = Expedition::FindCachedExpeditionByZoneInstance(zone_id, instance_id);
 
 	ST(0) = sv_newmortal();
 	if (RETVAL) {
@@ -6512,7 +6513,7 @@ EXTERN_C XS(boot_quest) {
 	newXS(strcpy(buf, "getcurrencyid"), XS__getcurrencyid, file);
 	newXS(strcpy(buf, "get_expedition"), XS__get_expedition, file);
 	newXS(strcpy(buf, "get_expedition_by_char_id"), XS__get_expedition_by_char_id, file);
-	newXS(strcpy(buf, "get_expedition_by_instance_id"), XS__get_expedition_by_instance_id, file);
+	newXS(strcpy(buf, "get_expedition_by_zone_instance"), XS__get_expedition_by_zone_instance, file);
 	newXS(strcpy(buf, "get_expedition_lockout_by_char_id"), XS__get_expedition_lockout_by_char_id, file);
 	newXS(strcpy(buf, "get_expedition_lockouts_by_char_id"), XS__get_expedition_lockouts_by_char_id, file);
 	newXS(strcpy(buf, "getinventoryslotid"), XS__getinventoryslotid, file);
diff --git a/zone/expedition.cpp b/zone/expedition.cpp
index 4ff049de3..20b2ebaf1 100644
--- a/zone/expedition.cpp
+++ b/zone/expedition.cpp
@@ -353,13 +353,14 @@ Expedition* Expedition::FindCachedExpeditionByID(uint32_t expedition_id)
 	return nullptr;
 }
 
-Expedition* Expedition::FindCachedExpeditionByInstanceID(uint32_t instance_id)
+Expedition* Expedition::FindCachedExpeditionByZoneInstance(uint32_t zone_id, uint32_t instance_id)
 {
-	if (instance_id && zone)
+	if (zone && zone_id != 0 && instance_id != 0)
 	{
 		for (const auto& cached_expedition : zone->expedition_cache)
 		{
-			if (cached_expedition.second->GetInstanceID() == instance_id)
+			if (cached_expedition.second->GetDynamicZone().GetZoneID() == zone_id &&
+			    cached_expedition.second->GetDynamicZone().GetInstanceID() == instance_id)
 			{
 				return cached_expedition.second.get();
 			}
diff --git a/zone/expedition.h b/zone/expedition.h
index eebe056d0..b5c33570f 100644
--- a/zone/expedition.h
+++ b/zone/expedition.h
@@ -85,7 +85,7 @@ public:
 	static Expedition* FindCachedExpeditionByCharacterID(uint32_t character_id);
 	static Expedition* FindCachedExpeditionByCharacterName(const std::string& char_name);
 	static Expedition* FindCachedExpeditionByID(uint32_t expedition_id);
-	static Expedition* FindCachedExpeditionByInstanceID(uint32_t instance_id);
+	static Expedition* FindCachedExpeditionByZoneInstance(uint32_t zone_id, uint32_t instance_id);
 	static std::vector<ExpeditionLockoutTimer> GetExpeditionLockoutsByCharacterID(uint32_t character_id);
 	static void HandleWorldMessage(ServerPacket* pack);
 	static void AddLockoutByCharacterID(uint32_t character_id, const std::string& expedition_name,
diff --git a/zone/lua_general.cpp b/zone/lua_general.cpp
index b5cc52684..f12d3a3d6 100644
--- a/zone/lua_general.cpp
+++ b/zone/lua_general.cpp
@@ -2183,7 +2183,7 @@ void lua_set_content_flag(std::string flag_name, bool enabled){
 Lua_Expedition lua_get_expedition() {
 	if (zone && zone->GetInstanceID() != 0)
 	{
-		return Expedition::FindCachedExpeditionByInstanceID(zone->GetInstanceID());
+		return Expedition::FindCachedExpeditionByZoneInstance(zone->GetZoneID(), zone->GetInstanceID());
 	}
 	return nullptr;
 }
@@ -2192,8 +2192,8 @@ Lua_Expedition lua_get_expedition_by_char_id(uint32 char_id) {
 	return Expedition::FindCachedExpeditionByCharacterID(char_id);
 }
 
-Lua_Expedition lua_get_expedition_by_instance_id(uint32 instance_id) {
-	return Expedition::FindCachedExpeditionByInstanceID(instance_id);
+Lua_Expedition lua_get_expedition_by_zone_instance(uint32 zone_id, uint32 instance_id) {
+	return Expedition::FindCachedExpeditionByZoneInstance(zone_id, instance_id);
 }
 
 luabind::object lua_get_expedition_lockout_by_char_id(lua_State* L, uint32 char_id, std::string expedition_name, std::string event_name) {
@@ -2889,7 +2889,7 @@ luabind::scope lua_register_general() {
 
 		luabind::def("get_expedition", &lua_get_expedition),
 		luabind::def("get_expedition_by_char_id", &lua_get_expedition_by_char_id),
-		luabind::def("get_expedition_by_instance_id", &lua_get_expedition_by_instance_id),
+		luabind::def("get_expedition_by_zone_instance", &lua_get_expedition_by_zone_instance),
 		luabind::def("get_expedition_lockout_by_char_id", &lua_get_expedition_lockout_by_char_id),
 		luabind::def("get_expedition_lockouts_by_char_id", (luabind::object(*)(lua_State*, uint32))&lua_get_expedition_lockouts_by_char_id),
 		luabind::def("get_expedition_lockouts_by_char_id", (luabind::object(*)(lua_State*, uint32, std::string))&lua_get_expedition_lockouts_by_char_id),
diff --git a/zone/zone.cpp b/zone/zone.cpp
index 34ad7f79b..3d46a0009 100755
--- a/zone/zone.cpp
+++ b/zone/zone.cpp
@@ -1492,7 +1492,7 @@ bool Zone::Process() {
 			if(Instance_Timer->Check())
 			{
 				// if this is a dynamic zone instance notify system associated with it
-				Expedition* expedition = Expedition::FindCachedExpeditionByInstanceID(GetInstanceID());
+				auto expedition = Expedition::FindCachedExpeditionByZoneInstance(GetZoneID(), GetInstanceID());
 				if (expedition)
 				{
 					expedition->RemoveAllMembers(false); // entity list will teleport clients out immediately
@@ -2722,7 +2722,7 @@ DynamicZone Zone::GetDynamicZone()
 		return {}; // invalid
 	}
 
-	auto expedition = Expedition::FindCachedExpeditionByInstanceID(GetInstanceID());
+	auto expedition = Expedition::FindCachedExpeditionByZoneInstance(GetZoneID(), GetInstanceID());
 	if (expedition)
 	{
 		return expedition->GetDynamicZone();