diff --git a/src/Nazara/Utility/X11/WindowImpl.cpp b/src/Nazara/Utility/X11/WindowImpl.cpp
index 297583a0f..700b8c6ee 100644
--- a/src/Nazara/Utility/X11/WindowImpl.cpp
+++ b/src/Nazara/Utility/X11/WindowImpl.cpp
@@ -113,7 +113,7 @@ namespace Nz
 		UpdateEventQueue(nullptr);
 	}
 
-	bool WindowImpl::Create(const VideoMode& mode, const String& title, UInt32 style)
+	bool WindowImpl::Create(const VideoMode& mode, const String& title, WindowStyleFlags style)
 	{
 		bool fullscreen = (style & Nz::WindowStyle_Fullscreen) != 0;
 		m_eventListener = true;
@@ -336,7 +336,7 @@ namespace Nz
 		return Vector2ui(m_size_hints.width, m_size_hints.height);
 	}
 
-	UInt32 WindowImpl::GetStyle() const
+	WindowStyleFlags WindowImpl::GetStyle() const
 	{
 		return m_style;
 	}
diff --git a/src/Nazara/Utility/X11/WindowImpl.hpp b/src/Nazara/Utility/X11/WindowImpl.hpp
index 70a699421..5764aa06c 100644
--- a/src/Nazara/Utility/X11/WindowImpl.hpp
+++ b/src/Nazara/Utility/X11/WindowImpl.hpp
@@ -35,7 +35,7 @@ namespace Nz
 			WindowImpl(WindowImpl&&) = delete; ///TODO?
 			~WindowImpl();
 
-			bool Create(const VideoMode& mode, const String& title, UInt32 style);
+			bool Create(const VideoMode& mode, const String& title, WindowStyleFlags style);
 			bool Create(WindowHandle handle);
 
 			void Destroy();
@@ -47,7 +47,7 @@ namespace Nz
 			unsigned int GetHeight() const;
 			Vector2i GetPosition() const;
 			Vector2ui GetSize() const;
-			UInt32 GetStyle() const;
+			WindowStyleFlags GetStyle() const;
 			String GetTitle() const;
 			unsigned int GetWidth() const;