diff --git a/src/server/unit_sao.h b/src/server/unit_sao.h
index c7f8c4aec..32b5dd30e 100644
--- a/src/server/unit_sao.h
+++ b/src/server/unit_sao.h
@@ -31,7 +31,7 @@ public:
 	UnitSAO(ServerEnvironment *env, v3f pos);
 	virtual ~UnitSAO() = default;
 
-	u16 getHP() const { return m_hp; }
+	u16 getHP() const override { return m_hp; }
 	// Use a function, if isDead can be defined by other conditions
 	bool isDead() const { return m_hp == 0; }
 
@@ -59,39 +59,39 @@ public:
 	{
 		return itemgroup_get(getArmorGroups(), "immortal");
 	}
-	void setArmorGroups(const ItemGroupList &armor_groups);
-	const ItemGroupList &getArmorGroups() const;
+	void setArmorGroups(const ItemGroupList &armor_groups) override;
+	const ItemGroupList &getArmorGroups() const override;
 
 	// Animation
 	void setAnimation(v2f frame_range, float frame_speed, float frame_blend,
-			bool frame_loop);
+			bool frame_loop) override;
 	void getAnimation(v2f *frame_range, float *frame_speed, float *frame_blend,
-			bool *frame_loop);
-	void setAnimationSpeed(float frame_speed);
+			bool *frame_loop) override;
+	void setAnimationSpeed(float frame_speed) override;
 
 	// Bone position
-	void setBoneOverride(const std::string &bone, const BoneOverride &props);
-	BoneOverride getBoneOverride(const std::string &bone);
+	void setBoneOverride(const std::string &bone, const BoneOverride &props) override;
+	BoneOverride getBoneOverride(const std::string &bone) override;
 	const std::unordered_map<std::string, BoneOverride>
-			&getBoneOverrides() const { return m_bone_override; };
+			&getBoneOverrides() const override { return m_bone_override; };
 
 	// Attachments
-	ServerActiveObject *getParent() const;
+	ServerActiveObject *getParent() const override;
 	inline bool isAttached() const { return m_attachment_parent_id != 0; }
 	void setAttachment(object_t parent_id, const std::string &bone, v3f position,
-			v3f rotation, bool force_visible);
+			v3f rotation, bool force_visible) override;
 	void getAttachment(object_t *parent_id, std::string *bone, v3f *position,
-			v3f *rotation, bool *force_visible) const;
+			v3f *rotation, bool *force_visible) const override;
 	void clearChildAttachments() override;
 	void addAttachmentChild(object_t child_id) override;
 	void removeAttachmentChild(object_t child_id) override;
-	const std::unordered_set<object_t> &getAttachmentChildIds() const {
+	const std::unordered_set<object_t> &getAttachmentChildIds() const override {
 		return m_attachment_child_ids;
 	}
 
 	// Object properties
-	ObjectProperties *accessObjectProperties();
-	void notifyObjectPropertiesModified();
+	ObjectProperties *accessObjectProperties() override;
+	void notifyObjectPropertiesModified() override;
 	void sendOutdatedData();
 
 	// Update packets
@@ -125,11 +125,11 @@ protected:
 	object_t m_attachment_parent_id = 0;
 
 	void clearAnyAttachments();
-	virtual void onMarkedForDeactivation() {
+	virtual void onMarkedForDeactivation() override {
 		ServerActiveObject::onMarkedForDeactivation();
 		clearAnyAttachments();
 	}
-	virtual void onMarkedForRemoval() {
+	virtual void onMarkedForRemoval() override {
 		ServerActiveObject::onMarkedForRemoval();
 		clearAnyAttachments();
 	}