diff -ruN owfs-2.7p21.orig/module/ownet/perl5/Makefile.am owfs-2.7p21/module/ownet/perl5/Makefile.am
--- owfs-2.7p21.orig/module/ownet/perl5/Makefile.am	2008-06-12 16:24:30.000000000 +0200
+++ owfs-2.7p21/module/ownet/perl5/Makefile.am	2012-05-20 15:45:07.340529762 +0200
@@ -7,9 +7,9 @@
 # Can't really install the perl-modules under prefix-directory.. it should be site-global.
 OWNet/Makefile: OWNet/Makefile.PL
 if HAVE_DEBIAN
-	( cd OWNet; $(PERL) Makefile.PL PREFIX=@prefix@ )
+	( cd OWNet; $(PERL) Makefile.PL PREFIX=@prefix@ INSTALLDIRS=vendor )
 else
-	( cd OWNet; $(PERL) Makefile.PL )
+	( cd OWNet; $(PERL) Makefile.PL INSTALLDIRS=vendor )
 endif
 
 install-data-local: OWNet/Makefile
diff -ruN owfs-2.7p21.orig/module/swig/perl5/Makefile.am owfs-2.7p21/module/swig/perl5/Makefile.am
--- owfs-2.7p21.orig/module/swig/perl5/Makefile.am	2008-06-12 16:24:30.000000000 +0200
+++ owfs-2.7p21/module/swig/perl5/Makefile.am	2012-05-20 15:44:04.519526274 +0200
@@ -17,9 +17,9 @@
 	( cd OW; $(PERL) Makefile.PL )
 else
 if HAVE_DEBIAN
-	( cd OW; $(PERL) Makefile.PL PREFIX=@prefix@ )
+	( cd OW; $(PERL) Makefile.PL PREFIX=@prefix@ INSTALLDIRS=vendor )
 else
-	( cd OW; $(PERL) Makefile.PL )
+	( cd OW; $(PERL) Makefile.PL INSTALLDIRS=vendor )
 endif
 endif