diff --git a/perl-Math-BigInt.spec b/perl-Math-BigInt.spec
index 93214ba..5ee1523 100644
--- a/perl-Math-BigInt.spec
+++ b/perl-Math-BigInt.spec
@@ -24,6 +24,7 @@ BuildRequires:  perl(Exporter)
 BuildRequires:  perl(integer)
 BuildRequires:  perl(Math::Complex) >= 1.39
 BuildRequires:  perl(overload)
+BuildRequires:  perl(Scalar::Util)
 # Tests:
 BuildRequires:  perl(base)
 BuildRequires:  perl(lib)