diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index cd230d4dacf..738973af48e 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -38408,7 +38408,7 @@ wmg                             // Williams 6in1 Multigame, Clay Cowgill
 @source:wms.cpp
 btippers                        // Big Tippers (Russian)
 cashcrop                        // Cash Crop (Russian)
-filthyr                         // Filthy Rich (English)
+filthyr                         // Filthy Rich (English) - (c) 1997 WMS
 filthyrr                        // Filthy Rich (Russian)
 hottop                          // Hot Toppings (English)
 hottopa                         // Hot Toppings (Russian?)