diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index ca40101ffa4..c1a680a32cb 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -4462,6 +4462,10 @@ files {
 	MAME_DIR .. "src/mame/drivers/palestra.cpp",
 	MAME_DIR .. "src/mame/machine/nl_palestra.cpp",
 	MAME_DIR .. "src/mame/drivers/mindset.cpp",
+	MAME_DIR .. "src/mame/drivers/gs6502.cpp",
+	MAME_DIR .. "src/mame/drivers/gs6809.cpp",
+	MAME_DIR .. "src/mame/drivers/gscpm.cpp",
+	MAME_DIR .. "src/mame/drivers/gsz80.cpp",
 }
 
 end
diff --git a/src/mame/mess.flt b/src/mame/mess.flt
index 9b746d68a21..b6aac146190 100644
--- a/src/mame/mess.flt
+++ b/src/mame/mess.flt
@@ -342,6 +342,10 @@ gp2x.cpp
 gp32.cpp
 grfd2301.cpp
 gridcomp.cpp
+gs6502.cpp
+gs6809.cpp
+gscpm.cpp
+gsz80.cpp
 h01x.cpp
 h19.cpp
 h8.cpp