diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 8a1cef04c29..4e4e8cd51ad 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -431,7 +431,7 @@ MACHINES["8530SCC"] = true
 MACHINES["AAKARTDEV"] = true
 MACHINES["ACIA6850"] = true
 MACHINES["ACORN_VIDC"] = true
---MACHINES["ADC0804"] = true
+MACHINES["ADC0804"] = true
 MACHINES["ADC0808"] = true
 MACHINES["ADC083X"] = true
 MACHINES["ADC1038"] = true