diff --git a/tests/sdl_canvas.c b/tests/sdl_canvas.c
index 97cd13480..10044ff4f 100644
--- a/tests/sdl_canvas.c
+++ b/tests/sdl_canvas.c
@@ -38,7 +38,7 @@ int main(int argc, char **argv) {
 
   // fill stuff
   SDL_Rect rect = { 200, 200, 175, 125 };
-  SDL_FillRect(screen, &rect, 0x2222ffff);
+  SDL_FillRect(screen, &rect, SDL_MapRGBA(screen->format, 0x22, 0x22, 0xff, 0xff));
 
   SDL_Flip(screen); 
 
diff --git a/tests/sdl_canvas_twice.c b/tests/sdl_canvas_twice.c
index 6c6e48029..28a7a01c0 100644
--- a/tests/sdl_canvas_twice.c
+++ b/tests/sdl_canvas_twice.c
@@ -8,12 +8,12 @@ int main(int argc, char **argv) {
   SDL_Init(SDL_INIT_VIDEO);
   SDL_Surface *screen = SDL_SetVideoMode(40, 40, 32, SDL_SWSURFACE);
 
-  SDL_FillRect(screen, NULL, 0xff0000ff);
+  SDL_FillRect(screen, NULL, SDL_MapRGBA(screen->format, 0xff, 0, 0, 0xff));
   SDL_LockSurface(screen);
   *((int*)screen->pixels + 95) = 0;
   SDL_UnlockSurface(screen);
 
-  SDL_FillRect(screen, NULL, 0x00ff00ff); // wipe out previous pixel and fill
+  SDL_FillRect(screen, NULL, SDL_MapRGBA(screen->format, 0, 0xff, 0, 0xff)); // wipe out previous pixel and fill
   SDL_LockSurface(screen);
   *((int*)screen->pixels + 205) = 0;
   SDL_UnlockSurface(screen);