diff --git a/components/esm/containerstate.hpp b/components/esm/containerstate.hpp
index 33818d4f15..b0c4da2d1b 100644
--- a/components/esm/containerstate.hpp
+++ b/components/esm/containerstate.hpp
@@ -8,18 +8,18 @@ namespace ESM
 {
     // format 0, saved games only
 
-    struct ContainerState : public ObjectState
+    struct ContainerState final : public ObjectState
     {
         InventoryState mInventory;
 
-        virtual void load (ESMReader &esm);
-        virtual void save (ESMWriter &esm, bool inInventory = false) const;
+        void load (ESMReader &esm) final;
+        void save (ESMWriter &esm, bool inInventory = false) const final;
 
-        virtual ContainerState& asContainerState()
+        ContainerState& asContainerState() final
         {
             return *this;
         }
-        virtual const ContainerState& asContainerState() const
+        const ContainerState& asContainerState() const final
         {
             return *this;
         }
diff --git a/components/esm/creaturelevliststate.hpp b/components/esm/creaturelevliststate.hpp
index 4d0b726a0e..ec0bc8667d 100644
--- a/components/esm/creaturelevliststate.hpp
+++ b/components/esm/creaturelevliststate.hpp
@@ -7,19 +7,19 @@ namespace ESM
 {
     // format 0, saved games only
 
-    struct CreatureLevListState : public ObjectState
+    struct CreatureLevListState final : public ObjectState
     {
         int mSpawnActorId;
         bool mSpawn;
 
-        virtual void load (ESMReader &esm);
-        virtual void save (ESMWriter &esm, bool inInventory = false) const;
+        void load (ESMReader &esm) final;
+        void save (ESMWriter &esm, bool inInventory = false) const final;
 
-        virtual CreatureLevListState& asCreatureLevListState()
+        CreatureLevListState& asCreatureLevListState() final
         {
             return *this;
         }
-        virtual const CreatureLevListState& asCreatureLevListState() const
+        const CreatureLevListState& asCreatureLevListState() const final
         {
             return *this;
         }
diff --git a/components/esm/creaturestate.hpp b/components/esm/creaturestate.hpp
index ca0d2601a9..3e9a44d560 100644
--- a/components/esm/creaturestate.hpp
+++ b/components/esm/creaturestate.hpp
@@ -9,7 +9,7 @@ namespace ESM
 {
     // format 0, saved games only
 
-    struct CreatureState : public ObjectState
+    struct CreatureState final : public ObjectState
     {
         InventoryState mInventory;
         CreatureStats mCreatureStats;
@@ -17,14 +17,14 @@ namespace ESM
         /// Initialize to default state
         void blank();
 
-        virtual void load (ESMReader &esm);
-        virtual void save (ESMWriter &esm, bool inInventory = false) const;
+        void load (ESMReader &esm) final;
+        void save (ESMWriter &esm, bool inInventory = false) const final;
 
-        virtual CreatureState& asCreatureState()
+        CreatureState& asCreatureState() final
         {
             return *this;
         }
-        virtual const CreatureState& asCreatureState() const
+        const CreatureState& asCreatureState() const final
         {
             return *this;
         }
diff --git a/components/esm/doorstate.hpp b/components/esm/doorstate.hpp
index 1251b90594..04ad110d6b 100644
--- a/components/esm/doorstate.hpp
+++ b/components/esm/doorstate.hpp
@@ -7,18 +7,18 @@ namespace ESM
 {
     // format 0, saved games only
 
-    struct DoorState : public ObjectState
+    struct DoorState final : public ObjectState
     {
         int mDoorState = 0;
 
-        virtual void load (ESMReader &esm);
-        virtual void save (ESMWriter &esm, bool inInventory = false) const;
+        void load (ESMReader &esm) final;
+        void save (ESMWriter &esm, bool inInventory = false) const final;
 
-        virtual DoorState& asDoorState()
+        DoorState& asDoorState() final
         {
             return *this;
         }
-        virtual const DoorState& asDoorState() const
+        const DoorState& asDoorState() const final
         {
             return *this;
         }
diff --git a/components/esm/npcstate.hpp b/components/esm/npcstate.hpp
index 4ae026da6b..6c04690500 100644
--- a/components/esm/npcstate.hpp
+++ b/components/esm/npcstate.hpp
@@ -10,7 +10,7 @@ namespace ESM
 {
     // format 0, saved games only
 
-    struct NpcState : public ObjectState
+    struct NpcState final : public ObjectState
     {
         InventoryState mInventory;
         NpcStats mNpcStats;
@@ -19,14 +19,14 @@ namespace ESM
         /// Initialize to default state
         void blank();
 
-        virtual void load (ESMReader &esm);
-        virtual void save (ESMWriter &esm, bool inInventory = false) const;
+        void load (ESMReader &esm) final;
+        void save (ESMWriter &esm, bool inInventory = false) const final;
 
-        virtual NpcState& asNpcState()
+        NpcState& asNpcState() final
         {
             return *this;
         }
-        virtual const NpcState& asNpcState() const
+        const NpcState& asNpcState() const final
         {
             return *this;
         }