diff --git a/src/altair8800/cpm/DixMille.asm b/src/altair8800/cpm/DixMille.asm
index 263e516..366c03a 100644
--- a/src/altair8800/cpm/DixMille.asm
+++ b/src/altair8800/cpm/DixMille.asm
@@ -1,4 +1,4 @@
-; DixMille.z80 - a Z80 assembly implementation of the dice game Dixe Mille.
+; DixMille.asm - a Z80 assembly implementation of the dice game Dixe Mille.
 ; Copyright (C) 2023  William R. Moore
 ;
 ; This program is free software: you can redistribute it and/or modify