diff --git a/perl-JSON-XS.spec b/perl-JSON-XS.spec
index 5c2a8db..536488b 100644
--- a/perl-JSON-XS.spec
+++ b/perl-JSON-XS.spec
@@ -69,7 +69,7 @@ for F in t/*.t; do
 done
 
 %build
-%{__perl} Makefile.PL INSTALLDIRS=vendor OPTIMIZE="%{optflags}" NO_PACKLIST=1 NO_PERLLOCAL=1
+%{__perl} Makefile.PL INSTALLDIRS=vendor OPTIMIZE="%{optflags}" NO_PACKLIST=1 NO_PERLLOCAL=1 </dev/null
 %{make_build}
 
 %install