diff --git a/perl-Config-Perl-V.spec b/perl-Config-Perl-V.spec
index f09e334..9d49be2 100644
--- a/perl-Config-Perl-V.spec
+++ b/perl-Config-Perl-V.spec
@@ -1,7 +1,7 @@
 %global cpan_version 0.27
 Name:           perl-Config-Perl-V
 Version:        0.28
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Structured data retrieval of perl -V output
 License:        GPL+ or Artistic
 URL:            http://search.cpan.org/dist/Config-Perl-V/
@@ -26,7 +26,10 @@ BuildRequires:  perl(warnings)
 # Digest::MD5 not used at tests
 # Tests:
 BuildRequires:  perl(Test::More)
+%if !%{defined perl_bootstrap}
+# Building core modules must not require non-core modules when bootstrapping
 BuildRequires:  perl(Test::NoWarnings)
+%endif
 Requires:       perl(:MODULE_COMPAT_%(eval "`perl -V:version`"; echo $version))
 Suggests:       perl(Digest::MD5)
 Conflicts:      perl < 4:5.22.0-347
@@ -52,7 +55,8 @@ make pure_install DESTDIR=$RPM_BUILD_ROOT
 %{_fixperms} $RPM_BUILD_ROOT/*
 
 %check
-make test
+# Building core modules must not require non-core modules when bootstrapping
+make test PERL_CORE=%{defined perl_bootstrap}
 
 %files
 %doc Changelog CONTRIBUTING.md examples README
@@ -60,6 +64,9 @@ make test
 %{_mandir}/man3/*
 
 %changelog
+* Fri May 12 2017 Petr Pisar <ppisar@redhat.com> - 0.28-2
+- Building core modules must not require non-core modules when bootstrapping
+
 * Thu May 11 2017 Petr Pisar <ppisar@redhat.com> - 0.28-1
 - Upgrade to 0.28 as provided in perl-5.25.12