diff --git a/constants/dss_equ.inc b/constants/dss_equ.inc
index 14f2b5b..6f9ce06 100644
--- a/constants/dss_equ.inc
+++ b/constants/dss_equ.inc
@@ -70,8 +70,8 @@ Dss:
 .Get_D_T        EQU     #17
 .Put_D_T        EQU     #18
 .F_First        EQU     #19
-.F_First.FATname	EQU	0
-.F_First.DOSname	EQU	1
+.F_First.FATname	EQU	0*256 + .F_First
+.F_First.DOSname	EQU	1*256 + .F_First
 	; from FAT
 	; .NAME:		BLOCK	8,' '			;+ #00 +00 NAME
 	; .EXT:			BLOCK	3,' '			;+ #08 +08 EXT