diff --git a/perl-Digest-HMAC.spec b/perl-Digest-HMAC.spec
index 342208f..b198eac 100644
--- a/perl-Digest-HMAC.spec
+++ b/perl-Digest-HMAC.spec
@@ -61,7 +61,7 @@ perl Makefile.PL NO_PACKLIST=1 NO_PERLLOCAL=1 INSTALLDIRS=vendor
 
 %install
 %{make_install}
-%{_fixperms} $RPM_BUILD_ROOT/*
+%{_fixperms} %{buildroot}/*
 
 # Install tests
 mkdir -p %{buildroot}%{_libexecdir}/%{name}