diff --git a/dist/info/prosystem_libretro.info b/dist/info/prosystem_libretro.info
index 223f59f8..ccaa1c63 100644
--- a/dist/info/prosystem_libretro.info
+++ b/dist/info/prosystem_libretro.info
@@ -12,7 +12,7 @@ supports_no_game = "false"
 firmware_count = 2
 firmware0_desc = "ProSystem.dat (Atari 7800 Database)"
 firmware0_path = "ProSystem.dat"
-firmware0_opt = "true"
+firmware0_opt = "false"
 firmware1_desc = "7800 BIOS (U).rom (Atari 7800 BIOS)"
 firmware1_path = "7800 BIOS (U).rom"
 firmware1_opt = "true"