kc3-lang/kc3

diff --git a/libc3/window/sdl2/window_sdl2.c b/libc3/window/sdl2/window_sdl2.c
index 2feec74..e1c6a84 100644
--- a/libc3/window/sdl2/window_sdl2.c
+++ b/libc3/window/sdl2/window_sdl2.c
@@ -142,12 +142,10 @@ bool window_sdl2_run (s_window_sdl2 *window)
   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
   SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
-  /*
   SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
                       SDL_GL_CONTEXT_PROFILE_CORE);
-  SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
-  SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
-  */
+  SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
+  SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 6);
   sdl_window = SDL_CreateWindow(window->title,
                                 window->x, window->y,
                                 window->w, window->h,