diff --git a/ORBit2.spec b/ORBit2.spec
index 3fc5a23..2b29db5 100644
--- a/ORBit2.spec
+++ b/ORBit2.spec
@@ -13,6 +13,7 @@ URL: http://www.gnome.org/projects/ORBit2/
 BuildRequires: libIDL-devel >= %{libidl_version}
 BuildRequires: glib2-devel >= %{glib2_version}
 BuildRequires: pkgconfig >= 0.14
+BuildRequires: gtk-doc
 
 %description
 ORBit is a high-performance CORBA (Common Object Request Broker