diff --git a/perl-experimental.spec b/perl-experimental.spec
index c63f62a..cff20b2 100644
--- a/perl-experimental.spec
+++ b/perl-experimental.spec
@@ -51,7 +51,7 @@ perl Makefile.PL INSTALLDIRS=vendor NO_PACKLIST=1 NO_PERLLOCAL=1
 
 %install
 %{make_install}
-%{_fixperms} $RPM_BUILD_ROOT/*
+%{_fixperms} %{buildroot}/*
 
 # Install tests
 mkdir -p %{buildroot}%{_libexecdir}/%{name}