--- XEphem.ad.orig	Sat Mar 14 01:45:06 1998
+++ XEphem.ad	Wed Apr 22 13:19:37 1998
@@ -166,7 +166,7 @@
 ! system-wide directory for xephem support files
 ! N.B. under this are auxil/, fifos/, and catalogs/
 ! N.B. if present, ppm.xe and the gsc base directory must be under catalogs/
-XEphem.BaseDir: .
+XEphem.BaseDir: @PREFIX@/lib/X11/xephem
 
 ! mount point for CDROM device
 ! only used if have access to ASP GSC CDROM