diff --git a/libvirt.spec.in b/libvirt.spec.in
index 002239c043..e2b7f65aaa 100644
--- a/libvirt.spec.in
+++ b/libvirt.spec.in
@@ -332,6 +332,7 @@ BuildRequires: libxslt
 BuildRequires: readline-devel
 BuildRequires: ncurses-devel
 BuildRequires: gettext
+BuildRequires: libtasn1-devel
 BuildRequires: gnutls-devel
 %if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
 # for augparse, optionally used in testing