diff --git a/demos/AVR/RT-ARDUINO-MEGA/main.c b/demos/AVR/RT-ARDUINO-MEGA/main.c
index 7cd6b98c5..8380124b7 100644
--- a/demos/AVR/RT-ARDUINO-MEGA/main.c
+++ b/demos/AVR/RT-ARDUINO-MEGA/main.c
@@ -58,6 +58,8 @@ int main(void) {
   chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
 
   test_execute((BaseSequentialStream *)&SD1, &rt_test_suite);
+  test_execute((BaseSequentialStream *)&SD1, &oslib_test_suite);
+
   while(TRUE) {
     chThdSleepMilliseconds(1000);
   }