--- XEphem.ad.orig	Wed Mar 10 11:20:24 1999
+++ XEphem.ad	Wed Mar 10 11:20:50 1999
@@ -170,7 +170,7 @@
 ! system-wide directory for xephem support files. Shared r-o among all users.
 ! N.B. under this are auxil/, fifos/, fits/, and catalogs/.
 ! N.B. if present, ppm.xe and the gsc base directory must be under catalogs/
-XEphem.ShareDir: .
+XEphem.ShareDir: @PREFIX@/lib/X11/xephem
 
 ! *************************************************************************
 ! default FITS info