diff --git a/include/Nazara/Core/EnttWorld.hpp b/include/Nazara/Core/EnttWorld.hpp
index 8c7ecd59e..c3b54cdaf 100644
--- a/include/Nazara/Core/EnttWorld.hpp
+++ b/include/Nazara/Core/EnttWorld.hpp
@@ -18,8 +18,8 @@ namespace Nz
 	{
 		public:
 			EnttWorld();
-			EnttWorld(const EnttWorld&) = default;
-			EnttWorld(EnttWorld&&) = default;
+			EnttWorld(const EnttWorld&) = delete;
+			EnttWorld(EnttWorld&&) = delete;
 			~EnttWorld() = default;
 
 			template<typename T, typename... Args> T& AddSystem(Args&&... args);
diff --git a/include/Nazara/Graphics/Camera.hpp b/include/Nazara/Graphics/Camera.hpp
index 5fa0bebae..baec2f034 100644
--- a/include/Nazara/Graphics/Camera.hpp
+++ b/include/Nazara/Graphics/Camera.hpp
@@ -32,7 +32,7 @@ namespace Nz
 			inline DegreeAnglef GetFOV() const;
 			UInt32 GetRenderMask() const override;
 			inline Int32 GetRenderOrder() const;
-			const RenderTarget& GetRenderTarget() const;
+			const RenderTarget& GetRenderTarget() const override;
 			inline const Vector2f& GetSize() const;
 			inline const Rectf& GetTargetRegion() const;
 			ViewerInstance& GetViewerInstance() override;
diff --git a/include/Nazara/Graphics/Components/LightComponent.hpp b/include/Nazara/Graphics/Components/LightComponent.hpp
index d1a33d09f..fef8bfed4 100644
--- a/include/Nazara/Graphics/Components/LightComponent.hpp
+++ b/include/Nazara/Graphics/Components/LightComponent.hpp
@@ -24,7 +24,7 @@ namespace Nz
 			static constexpr std::size_t MaxLightCount = 8;
 
 			inline LightComponent(bool initialyVisible = true);
-			LightComponent(const LightComponent&) = default;
+			LightComponent(const LightComponent&) = delete;
 			LightComponent(LightComponent&&) = default;
 			~LightComponent() = default;
 
@@ -44,7 +44,7 @@ namespace Nz
 
 			inline void Show(bool show = true);
 
-			LightComponent& operator=(const LightComponent&) = default;
+			LightComponent& operator=(const LightComponent&) = delete;
 			LightComponent& operator=(LightComponent&&) = default;
 
 			NazaraSignal(OnLightAttached, LightComponent* /*graphicsComponent*/, std::size_t /*lightIndex*/);