diff --git a/SPECS/openvpn.spec b/SPECS/openvpn.spec
index 7cffd15f..58d0b1b7 100644
--- a/SPECS/openvpn.spec
+++ b/SPECS/openvpn.spec
@@ -30,6 +30,7 @@ BuildRequires:     openssl-devel
 BuildRequires:     pkcs11-helper-devel >= 1.11
 BuildRequires:     pam-devel
 BuildRequires:     libselinux-devel
+BuildRequires:     gnutls-devel
 # For the perl_default_filter macro
 BuildRequires:     perl-macros
 %{?systemd_requires}