--- a/src/video/SDL_video.c Fri Apr 10 21:15:51 2015 -0400 +++ b/src/video/SDL_video.c Fri Apr 10 21:40:50 2015 -0400 @@ -2055,6 +2055,7 @@ if (SDL_GetWindowGammaRamp(window, NULL, NULL, NULL) < 0) { return -1; } + SDL_assert(window->gamma != NULL); } if (red) {