diff --git a/libsrc/geos-common/const.inc b/libsrc/geos-common/const.inc
index 6aec72c60..e7958579c 100644
--- a/libsrc/geos-common/const.inc
+++ b/libsrc/geos-common/const.inc
@@ -278,6 +278,7 @@ OFF_GS_DTYPE		=	189
 OFF_OP_TR_SC		=	171
 OFF_GS_ID		=	173
 ;		dir entry
+.ifdef __GEOS_CBM__
 FRST_FILE_ENTRY 	=	2
 OFF_CFILE_TYPE		=	0
 OFF_DE_TR_SC		=	1
@@ -285,9 +286,20 @@ OFF_FNAME		=	3
 OFF_GHDR_PTR		=	19
 OFF_GSTRUC_TYPE 	=	21
 OFF_GFILE_TYPE		=	22
-OFF_YEAR		=	23
+OFF_DATE		=	23
 OFF_SIZE		=	28
 OFF_NXT_FILE		=	32
+.else
+FRST_FILE_ENTRY 	=	43
+OFF_GSTRUC_TYPE 	=	0
+OFF_FNAME		=	1
+OFF_GFILE_TYPE		=	16
+OFF_DE_TR_SC		=	17
+OFF_SIZE		=	21
+OFF_DATE		=	24
+OFF_GHDR_PTR		=	31
+OFF_NXT_FILE		=	39
+.endif
 ;		file header
 O_GHIC_WIDTH		=	2
 O_GHIC_HEIGHT		=	3