diff --git a/include/billy_sheet.hpp b/include/billy_sheet.hpp
index da15641..b0a8a49 100644
--- a/include/billy_sheet.hpp
+++ b/include/billy_sheet.hpp
@@ -4,11 +4,16 @@
 #include <random>
 
 namespace character {
-	class BillySheet {
+	class BillySheet final {
 	private:
 		std::mt19937_64 engine{ std::random_device{ "rdseed" }() };
 
 		std::string caractere{};
+
+	public:
+		BillySheet() = default;
+
+		~BillySheet() noexcept = default;
 	};
 }
 
diff --git a/include/characteristic/adresse.hpp b/include/characteristic/adresse.hpp
index a30f6d8..ab2fdb2 100644
--- a/include/characteristic/adresse.hpp
+++ b/include/characteristic/adresse.hpp
@@ -4,12 +4,17 @@
 #include <cstdint>
 
 namespace character::characteristic {
-	class Adresse {
+	class Adresse final {
 	private:
 		const std::uint32_t base{ 1 };
 		std::uint32_t carac{ 0 };
 		std::uint32_t materiel{ 0 };
 		std::uint32_t additional{ 0 };
+
+	public:
+		Adresse() noexcept = default;
+
+		~Adresse() noexcept = default;
 	};
 }
 
diff --git a/include/characteristic/chance.hpp b/include/characteristic/chance.hpp
index 5ea3df5..22ff7ec 100644
--- a/include/characteristic/chance.hpp
+++ b/include/characteristic/chance.hpp
@@ -4,12 +4,17 @@
 #include <cstdint>
 
 namespace character::characteristic {
-	class Chance {
+	class Chance final {
 	private:
 		const std::uint32_t base{ 3 };
 		std::uint32_t carac{ 0 };
 		std::uint32_t materiel{ 0 };
 		std::uint32_t additional{ 0 };
+
+	public:
+		Chance() noexcept = default;
+
+		~Chance() noexcept = default;
 	};
 }
 
diff --git a/include/characteristic/habilete.hpp b/include/characteristic/habilete.hpp
index fc93a1f..6caffd2 100644
--- a/include/characteristic/habilete.hpp
+++ b/include/characteristic/habilete.hpp
@@ -10,6 +10,11 @@ namespace character::characteristic {
 		std::uint32_t carac{ 0 };
 		std::uint32_t materiel{ 0 };
 		std::uint32_t additional{ 0 };
+
+	public:
+		Habilete() noexcept = default;
+
+		~Habilete() noexcept = default;
 	};
 }