diff --git a/python-sphinxcontrib-httpdomain.spec b/python-sphinxcontrib-httpdomain.spec
index 7d6c2b4..b321dc7 100644
--- a/python-sphinxcontrib-httpdomain.spec
+++ b/python-sphinxcontrib-httpdomain.spec
@@ -7,7 +7,7 @@
 
 Name:           python-%{upstream_name}
 Version:        1.1.8
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Sphinx domain for documenting HTTP APIs
 License:        BSD
 URL:            http://packages.python.org/sphinxcontrib-httpdomain/
@@ -23,10 +23,11 @@ Group:          Development/Libraries
 BuildRoot:      %(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)
 %endif
 
-# This package is not usable without Sphinx, but EPEL5 and EPEL6 have 
-# both python-sphinx and python-sphinx10, and we don't want to require one or 
-# the other in particular.
-%if 0%{?fedora}
+%if 0%{?rhel}
+# This extension does not work with Sphinx 0.6 as shipped in RHEL,
+# only with Sphinx 1.0 in EPEL.
+Requires:       python-sphinx10
+%else
 Requires:       python-sphinx
 %endif
 
@@ -60,6 +61,9 @@ rm -rf %{buildroot}
 %{python_sitelib}/*
 
 %changelog
+* Wed Oct 09 2013 Dan Callaghan <dcallagh@redhat.com> - 1.1.8-3
+- require python-sphinx10 on EPEL
+
 * Sun Aug 04 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.1.8-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild