diff --git a/libgtop2.spec b/libgtop2.spec
index 29e6ecb..04975db 100644
--- a/libgtop2.spec
+++ b/libgtop2.spec
@@ -17,7 +17,9 @@ Requires:	glib2 >= %{glib2_version}
 BuildRequires:	glib2-devel >= %{glib2_version}
 BuildRequires:  texinfo libtool gettext
 BuildRequires:  intltool
-BuildRequires:  autoconf automake 
+BuildRequires:  autoconf 
+BuildRequires:  automake 
+BuildRequires:  gtk-doc
 
 Patch: libgtop-2.0.2-prog_as.patch