diff --git a/dist/info/kronos_libretro.info b/dist/info/kronos_libretro.info
index 2ce25280..e2a72a1d 100644
--- a/dist/info/kronos_libretro.info
+++ b/dist/info/kronos_libretro.info
@@ -14,9 +14,9 @@ supports_no_game = "false"
 firmware_count = 2
 firmware0_desc = "saturn_bios.bin (Saturn BIOS)"
 firmware0_path = "kronos/saturn_bios.bin"
-firmware0_opt = "true"
+firmware0_opt = "false"
 firmware1_desc = "stvbios.zip (ST-V BIOS from MAME)"
 firmware1_path = "kronos/stvbios.zip"
-firmware1_opt = "true"
+firmware1_opt = "false"
 notes = "(!) saturn_bios.bin (md5): af5828fdff51384f99b3c4926be27762|(!) stvbios.zip (md5): f5665438607ccbed46ef2ba9e303638c"