diff --git a/include/Nazara/Renderer/RenderWindow.hpp b/include/Nazara/Renderer/RenderWindow.hpp
index c71ad2b34..17a9b705d 100644
--- a/include/Nazara/Renderer/RenderWindow.hpp
+++ b/include/Nazara/Renderer/RenderWindow.hpp
@@ -31,7 +31,7 @@ namespace Nz
 		public:
 			RenderWindow() = default;
 			RenderWindow(VideoMode mode, const String& title, WindowStyleFlags style = WindowStyle_Default, const ContextParameters& parameters = ContextParameters());
-			RenderWindow(WindowHandle handle, const ContextParameters& parameters = ContextParameters());
+			explicit RenderWindow(WindowHandle handle, const ContextParameters& parameters = ContextParameters());
 			RenderWindow(const RenderWindow&) = delete;
 			RenderWindow(RenderWindow&&) = delete; ///TODO
 			virtual ~RenderWindow();
diff --git a/include/Nazara/Utility/Window.hpp b/include/Nazara/Utility/Window.hpp
index 32487370a..b9cbdb6fb 100644
--- a/include/Nazara/Utility/Window.hpp
+++ b/include/Nazara/Utility/Window.hpp
@@ -38,7 +38,7 @@ namespace Nz
 		public:
 			Window();
 			inline Window(VideoMode mode, const String& title, WindowStyleFlags style = WindowStyle_Default);
-			inline Window(WindowHandle handle);
+			inline explicit Window(WindowHandle handle);
 			Window(const Window&) = delete;
 			inline Window(Window&& window) noexcept;
 			virtual ~Window();