diff --git a/scripts/src/tools.lua b/scripts/src/tools.lua
index 64860177f2a..8c371f3b19a 100644
--- a/scripts/src/tools.lua
+++ b/scripts/src/tools.lua
@@ -455,7 +455,7 @@ files {
 dofile("netlist.lua")
 
 
-if (_OPTIONS["target"]=="mess") then
+if (_OPTIONS["target"]~="mame") then
 --------------------------------------------------
 -- castool
 --------------------------------------------------