diff --git a/zone/client_process.cpp b/zone/client_process.cpp
index 31e914cc8..99f6a48f5 100644
--- a/zone/client_process.cpp
+++ b/zone/client_process.cpp
@@ -561,6 +561,10 @@ bool Client::Process() {
 			{
 				ItemTimerCheck();
 			}
+
+			if (m_clear_wearchange_cache_timer.Check()) {
+				m_last_seen_wearchange.clear();
+			}
 		}
 	}
 
diff --git a/zone/mob.cpp b/zone/mob.cpp
index 97c2d17e5..16774bfbc 100644
--- a/zone/mob.cpp
+++ b/zone/mob.cpp
@@ -133,6 +133,7 @@ Mob::Mob(
 	m_see_close_mobs_timer(1000),
 	m_mob_check_moving_timer(1000),
 	bot_attack_flag_timer(10000),
+	m_clear_wearchange_cache_timer(60 * 10 * 1000), // 10 minutes
 	m_destroying(false)
 {
 	mMovementManager = &MobMovementManager::Get();
diff --git a/zone/mob.h b/zone/mob.h
index 18541857e..193d8aae2 100644
--- a/zone/mob.h
+++ b/zone/mob.h
@@ -211,6 +211,7 @@ public:
 	uint16 m_last_wearchange_race_id = 0;
 	// client_id -> slot_id -> key
 	std::unordered_map<uint32_t, std::unordered_map<uint8_t, uint64_t>> m_last_seen_wearchange;
+	Timer m_clear_wearchange_cache_timer;
 
 	// Bot attack flag
 	Timer bot_attack_flag_timer;
diff --git a/zone/npc.cpp b/zone/npc.cpp
index 4a87dc1f6..ade7c8e93 100644
--- a/zone/npc.cpp
+++ b/zone/npc.cpp
@@ -632,6 +632,10 @@ bool NPC::Process()
 	}
 
 	if (tic_timer.Check()) {
+		if (m_clear_wearchange_cache_timer.Check()) {
+			m_last_seen_wearchange.clear();
+		}
+
 		if (parse->HasQuestSub(GetNPCTypeID(), EVENT_TICK)) {
 			parse->EventNPC(EVENT_TICK, this, nullptr, "", 0);
 		}