--- Makefile.orig	2013-11-20 17:41:38.000000000 +0100
+++ Makefile	2013-11-20 17:43:12.000000000 +0100
@@ -59,7 +59,7 @@
 	$(MKDIR_P) -m 755 $(DESTDIR)$(PREFIX)/bin
 	$(INSTALL) -m 755 -o root -g $(ROOT_GROUP) vlock $(DESTDIR)$(BINDIR)/vlock
 	$(MKDIR_P) -m 755 $(DESTDIR)$(PREFIX)/sbin
-	$(INSTALL) -m 4711 -o root -g $(ROOT_GROUP) vlock-main $(DESTDIR)$(SBINDIR)/vlock-main
+	$(INSTALL) -s -m 4711 -o root -g $(ROOT_GROUP) vlock-main $(DESTDIR)$(SBINDIR)/vlock-main
 
 .PHONY: install-plugins
 install-plugins: install-modules install-scripts
