--- gnats-3.999.20000924.orig/gnats/configure.in
+++ gnats-3.999.20000924/gnats/configure.in
@@ -245,13 +245,13 @@
 	GLOBAL_DB_LIST_FILE=$with_gnats_dblist_file
 fi
 
-if test -z "${DB_LIST_FILE}"; then
+if test -z "${GLOBAL_DB_LIST_FILE}"; then
 	AC_MSG_RESULT(default to ${datadir}/gnats/databases)
 	GLOBAL_DB_LIST_FILE=${datadir}/gnats/databases
 fi
 
 AC_MSG_CHECKING(for --with-gnats-default-db)
-if test -n "${with_default_db}"; then
+if test -n "${with_gnats_default_db}"; then
 	AC_MSG_RESULT($with_gnats_default_db)
 	GNATS_DEFAULT_DB_DIR="$with_gnats_default_db"
 fi