--- Makefile.in.orig	2022-02-21 11:12:46 UTC
+++ Makefile.in
@@ -207,7 +207,7 @@ install: all
 		$(INSTALL_PROGRAM) $(exedir)/$$BIN $(DESTDIR)/$(sbindir)/$$BIN ;		\
 	done
 	if ! test -f $(DESTDIR)/@CONFIG_FILE@ ; then						\
-		$(INSTALL_DATA) $(srcdir)/doc/bird.conf.example $(DESTDIR)/@CONFIG_FILE@ ;	\
+		$(INSTALL_DATA) $(srcdir)/doc/bird.conf.example $(DESTDIR)/@CONFIG_FILE@.sample ;	\
 	else											\
 		echo "Not overwriting old bird.conf" ;						\
 	fi