diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 269d649a0ea..0c5d956db6e 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -758,7 +758,7 @@ BUSES["GAMEBOY"] = true
 BUSES["GAMEGEAR"] = true
 BUSES["GBA"] = true
 BUSES["GENERIC"] = true
-BUSES["GIO"] = true
+BUSES["GIO64"] = true
 BUSES["HEXBUS"] = true
 BUSES["HPHIL"] = true
 BUSES["HPDIO"] = true