diff --git a/dGame/dGameMessages/CombatMessages.cpp b/dGame/dGameMessages/CombatMessages.cpp
index 521d14a3d..778dc9173 100644
--- a/dGame/dGameMessages/CombatMessages.cpp
+++ b/dGame/dGameMessages/CombatMessages.cpp
@@ -354,6 +354,15 @@ namespace GameMessages {
 		return true;
 	}
 
+	void RemoveBuffsAppliedByObject::Serialize(RakNet::BitStream& bitStream) const {
+		BitStreamUtils::WriteOptional(bitStream, objectID, LWOOBJID_EMPTY);
+	}
+
+	bool RemoveBuffsAppliedByObject::Deserialize(RakNet::BitStream& bitStream) {
+		VALIDATE_READ(BitStreamUtils::ReadOptional(bitStream, objectID, LWOOBJID_EMPTY));
+		return true;
+	}
+
 	void AddRunSpeedModifier::Serialize(RakNet::BitStream& bitStream) const {
 		BitStreamUtils::WriteOptional(bitStream, i64Caster, LWOOBJID_EMPTY);
 		BitStreamUtils::WriteOptional(bitStream, uiModifier, 500u);
diff --git a/dGame/dGameMessages/CombatMessages.h b/dGame/dGameMessages/CombatMessages.h
index 05af863f1..fc6778704 100644
--- a/dGame/dGameMessages/CombatMessages.h
+++ b/dGame/dGameMessages/CombatMessages.h
@@ -231,6 +231,17 @@ namespace GameMessages {
 		uint32_t uiBuffID{};
 	};
 
+	// Server -> client. The client's BuffComponent removes every buff (and immunity) whose source is objectID
+	// (msgRemoveBuffsAppliedByObject @ 00d38f20 in 1.10.64). Live sent it to each player when an object left the
+	// world (see docs/CaptureUnknowns.md).
+	struct RemoveBuffsAppliedByObject : public NetGameMsg {
+		RemoveBuffsAppliedByObject() : NetGameMsg(MessageType::Game::REMOVE_BUFFS_APPLIED_BY_OBJECT) {}
+		void Serialize(RakNet::BitStream& bitStream) const override;
+		bool Deserialize(RakNet::BitStream& bitStream) override;
+
+		LWOOBJID objectID{ LWOOBJID_EMPTY }; // optional
+	};
+
 	// Server -> client.
 	struct AddRunSpeedModifier : public NetGameMsg {
 		AddRunSpeedModifier() : NetGameMsg(MessageType::Game::ADD_RUN_SPEED_MODIFIER) {}
diff --git a/tests/dGameTests/dGameMessagesTests/CombatMessagesTests.cpp b/tests/dGameTests/dGameMessagesTests/CombatMessagesTests.cpp
index 45172ef16..ff5f8284d 100644
--- a/tests/dGameTests/dGameMessagesTests/CombatMessagesTests.cpp
+++ b/tests/dGameTests/dGameMessagesTests/CombatMessagesTests.cpp
@@ -378,6 +378,19 @@ TEST_F(CombatMessagesTests, GoldenBytes) {
 	EXPECT_PACKET_EQ(FromHex("20 60 00 00 00", 35), Payload(remove));
 }
 
+// A packet from a 2011/2012 live capture: RemoveBuffsAppliedByObject (1726) sent to a player when another player
+// left the world. The client reads a flag and an optional object ID (0x00d808e0 in 1.10.64).
+TEST_F(CombatMessagesTests, RemoveBuffsAppliedByObjectMatchesLiveCapture) {
+	const auto msg = FromLiveCapture<GameMessages::RemoveBuffsAppliedByObject>("5305000c00000000b592d85a01000010be06db7bbdb58080000800");
+	EXPECT_EQ(msg.target, 0x100000015ad892b5LL);
+	EXPECT_EQ(msg.objectID, 0x100000016b7bf7b6LL);
+
+	GameMessages::RemoveBuffsAppliedByObject empty;
+	EXPECT_PACKET_EQ(FromHex("00", 1), Payload(empty));
+	EXPECT_EQ(RoundTrip(msg).objectID, msg.objectID);
+	ExpectTruncatedFails(msg);
+}
+
 // WIRE FIX: the client writes and reads the immunity flags in alphabetical order after the u32 state
 // (GameMessage::SetStatusImmunity::Serialize @ 0x00d8f140). Setting one flag at a time must set exactly that bit.
 TEST_F(CombatMessagesTests, SetStatusImmunityUsesClientOrder) {