diff --git a/include/Nazara/OpenGLRenderer/Wrapper/Linux/EGLContextX11.hpp b/include/Nazara/OpenGLRenderer/Wrapper/Linux/EGLContextX11.hpp
index 8689089be..7949514be 100644
--- a/include/Nazara/OpenGLRenderer/Wrapper/Linux/EGLContextX11.hpp
+++ b/include/Nazara/OpenGLRenderer/Wrapper/Linux/EGLContextX11.hpp
@@ -16,16 +16,15 @@ namespace Nz::GL
 	{
 		public:
 			using EGLContextBase::EGLContextBase;
-			EGLContextX11(const EGLContextX11&) = default;
-			EGLContextX11(EGLContextX11&&) = default;
+			EGLContextX11(const EGLContextX11&) = delete;
+			EGLContextX11(EGLContextX11&&) = delete;
 			~EGLContextX11() = default;
 
-			bool Create(const ContextParams& params, const EGLContextBase* shareContext = nullptr) override;
 			bool Create(const ContextParams& params, WindowHandle window, const EGLContextBase* shareContext = nullptr) override;
 			void Destroy() override;
 
-			EGLContextX11& operator=(const EGLContextX11&) = default;
-			EGLContextX11& operator=(EGLContextX11&&) = default;
+			EGLContextX11& operator=(const EGLContextX11&) = delete;
+			EGLContextX11& operator=(EGLContextX11&&) = delete;
 
 		private:
 			::Display* m_xdisplay = nullptr;
diff --git a/include/Nazara/Utility/VertexDeclaration.hpp b/include/Nazara/Utility/VertexDeclaration.hpp
index 418861f46..6fc49cdd0 100644
--- a/include/Nazara/Utility/VertexDeclaration.hpp
+++ b/include/Nazara/Utility/VertexDeclaration.hpp
@@ -35,7 +35,7 @@ namespace Nz
 
 			VertexDeclaration(VertexInputRate inputRate, std::initializer_list<ComponentEntry> components);
 			VertexDeclaration(const VertexDeclaration&) = delete;
-			VertexDeclaration(VertexDeclaration&&) = default;
+			VertexDeclaration(VertexDeclaration&&) = delete;
 			~VertexDeclaration() = default;
 
 			inline const Component* FindComponent(VertexComponent vertexComponent, std::size_t componentIndex) const;
@@ -52,7 +52,7 @@ namespace Nz
 			template<typename T> bool HasComponentOfType(VertexComponent vertexComponent, std::size_t componentIndex = 0) const;
 
 			VertexDeclaration& operator=(const VertexDeclaration&) = delete;
-			VertexDeclaration& operator=(VertexDeclaration&&) = default;
+			VertexDeclaration& operator=(VertexDeclaration&&) = delete;
 
 			static inline const VertexDeclarationRef& Get(VertexLayout layout);
 			static bool IsTypeSupported(ComponentType type);