diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index b5963dd4675..2c71faadb79 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -816,6 +816,7 @@ function linkProjects_mame_mess(_target, _subtarget)
 		"sanyo",
 		"saturn",
 		"sega",
+		"sequential",
 		"sgi",
 		"sharp",
 		"siemens",
@@ -2439,6 +2440,11 @@ files {
 	MAME_DIR .. "src/mame/machine/megacdcd.h",
 }
 
+createMESSProjects(_target, _subtarget, "sequential")
+files {
+	MAME_DIR .. "src/mame/drivers/prophet600.cpp",
+}
+
 createMESSProjects(_target, _subtarget, "sgi")
 files {
 	MAME_DIR .. "src/mame/machine/sgi.cpp",
diff --git a/src/mame/mess.lst b/src/mame/mess.lst
index c18dfec2857..f0f84fbe822 100644
--- a/src/mame/mess.lst
+++ b/src/mame/mess.lst
@@ -119,6 +119,9 @@ dcdev    // 1998 Sega HKT-0120 Sega Dreamcast Development Box
 
 svmu     // 1998 Sega Visual Memory Unit
 
+// Sequential Circuits
+prpht600	// 1983 Sequential Circuits
+
 // Sony
 psj    // 1994 Sony PlayStation (Japan)
 psu    // 1995 Sony PlayStation (USA)