diff --git a/mod_wsgi.spec b/mod_wsgi.spec
index 53b6c28..363d7d4 100644
--- a/mod_wsgi.spec
+++ b/mod_wsgi.spec
@@ -8,8 +8,10 @@
 
 %if 0%{?fedora} || 0%{?rhel} > 7
 %global with_python3 1
+%global sphinxbin %{_bindir}/sphinx-build-3
 %else
 %global with_python3 0
+%global sphinxbin %{_bindir}/sphinx-build
 %endif
 
 %if 0%{?fedora} || 0%{?rhel} <= 7
@@ -21,7 +23,7 @@
 
 Name:           mod_wsgi
 Version:        4.6.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        A WSGI interface for Python web applications in Apache
 Group:          System Environment/Libraries
 License:        ASL 2.0
@@ -32,7 +34,6 @@ Source2:        wsgi-python3.conf
 Patch1: mod_wsgi-4.5.20-exports.patch
 
 BuildRequires:  httpd-devel
-BuildRequires:  python-sphinx
 BuildRequires:  gcc
 
 # Suppress auto-provides for module DSO
@@ -55,7 +56,7 @@ existing WSGI adapters for mod_python or CGI.\
 %package -n python2-%{name}
 Summary: %summary
 Requires:       httpd-mmn = %{_httpd_mmn}
-BuildRequires:  python2-devel
+BuildRequires:  python2-devel, python2-sphinx
 %{?python_provide:%python_provide python2-%{name}}
 # Remove before F30
 Provides: mod_wsgi = %{version}-%{release}
@@ -70,7 +71,7 @@ Obsoletes: mod_wsgi < %{version}-%{release}
 %package -n python3-%{name}
 Summary:        %summary
 Requires:       httpd-mmn = %{_httpd_mmn}
-BuildRequires:  python3-devel
+BuildRequires:  python3-devel, python3-sphinx
 %if 0%{?with_python2} == 0
 Provides: mod_wsgi = %{version}-%{release}
 Provides: mod_wsgi%{?_isa} = %{version}-%{release}
@@ -90,7 +91,7 @@ cp -a . %{py3dir}
 %endif
 
 %build
-make -C docs html
+make -C docs html SPHINXBUILD=%{sphinxbin}
 
 export LDFLAGS="$RPM_LD_FLAGS -L%{_libdir}"
 export CFLAGS="$RPM_OPT_FLAGS -fno-strict-aliasing"
@@ -164,6 +165,9 @@ ln -s %{_bindir}/mod_wsgi-express-2 $RPM_BUILD_ROOT%{_bindir}/mod_wsgi-express
 %endif
 
 %changelog
+* Fri Apr 20 2018 Joe Orton <jorton@redhat.com> - 4.6.2-3
+- use sphinx-build-3 if python2 support is disabled
+
 * Thu Mar 22 2018 Troy Dawson <tdawson@redhat.com> - 4.6.2-2
 - Update conditionals.
 - Make preperations for non-python2 builds