diff --git a/src/mame/mess.flt b/src/mame/mess.flt
index a456ce9c31b..f3566081cb3 100644
--- a/src/mame/mess.flt
+++ b/src/mame/mess.flt
@@ -188,6 +188,7 @@ dct11em.cpp
 decstation.cpp
 dectalk.cpp
 decwritr.cpp
+dg680.cpp
 dgn_beta.cpp
 diablo1300.cpp
 didact.cpp