diff --git a/src/mame/mess.flt b/src/mame/mess.flt
index 72a98929832..fe700ed6501 100644
--- a/src/mame/mess.flt
+++ b/src/mame/mess.flt
@@ -137,6 +137,7 @@ cbnt2039.cpp
 cc40.cpp
 ccs2810.cpp
 ccs300.cpp
+cd100.cpp
 cd2650.cpp
 cdc721.cpp
 cdsys5.cpp