diff -rup pptpd-1.3.4/plugins/Makefile pptpd-1.3.4-install/plugins/Makefile
--- pptpd-1.3.4/plugins/Makefile	2006-08-02 22:02:01.000000000 -0400
+++ pptpd-1.3.4-install/plugins/Makefile	2011-04-07 14:29:24.377575790 -0400
@@ -3,7 +3,7 @@ COPTS	= -O2 -g
 CFLAGS	= $(COPTS) -I.. -I../../include -fPIC
 LDFLAGS	= -shared
 LDADD   = -lutil
-INSTALL	= install -o root
+INSTALL	= install -c
 prefix  = /usr/local
 
 PLUGINS = pptpd-logwtmp.so
@@ -18,7 +18,7 @@ all:	$(PLUGINS)
 %.so: %.c
 	$(CC) -o $@ $(LDFLAGS) $(CFLAGS) $^ $(LDADD)
 
-LIBDIR	?= $(DESTDIR)$(prefix)/lib/pptpd
+LIBDIR = $(DESTDIR)/usr/lib/pptpd
 
 install: $(PLUGINS)
 	$(INSTALL) -d $(LIBDIR)