diff --git a/doc/install-guide/section_basics-packages.xml b/doc/install-guide/section_basics-packages.xml
index a07d9896ae..469edb3057 100644
--- a/doc/install-guide/section_basics-packages.xml
+++ b/doc/install-guide/section_basics-packages.xml
@@ -14,7 +14,15 @@
   <para os="fedora;centos;rhel">The examples in this guide use the
     OpenStack packages from the RDO repository. These packages work
     on Red Hat Enterprise Linux 6, compatible versions of CentOS,
-    and Fedora 20. To enable the RDO repository, download and
+    and Fedora 20.</para>
+  <para os="fedora;centos;rhel">
+    Install the <package>yum-plugin-priorities</package> plug-in. This package
+    allows the assignment of relative priorities to the configured software
+    repositories. This functionality is used by the RDO release packages:
+  </para>
+  <screen os="fedora;centos;rhel"><prompt>#</prompt> <userinput>yum install yum-plugin-priorities</userinput></screen>
+  <para os="fedora;centos;rhel">
+    To enable the RDO repository, download and
     install the <package>rdo-release-icehouse</package>
     package:</para>
   <screen os="fedora;centos;rhel"><prompt>#</prompt> <userinput>yum install http://repos.fedorapeople.org/repos/openstack/openstack-icehouse/rdo-release-icehouse-3.noarch.rpm</userinput></screen>