diff --git a/opencv.changes b/opencv.changes
index 2188d36..743d0b2 100644
--- a/opencv.changes
+++ b/opencv.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Mon Jan  8 09:35:37 UTC 2018 - tchvatal@suse.com
+
+- Add conditionals for python2 and python3 to allow us enabling
+  only desired python variants when needed
+- Do not depend on sphinx as py2 and py3 seem to collide there
+
 -------------------------------------------------------------------
 Sat Nov 25 14:29:14 UTC 2017 - stefan.bruens@rwth-aachen.de
 
diff --git a/opencv.spec b/opencv.spec
index 85fdb80..09efbd9 100644
--- a/opencv.spec
+++ b/opencv.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package opencv
 #
-# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -22,6 +22,8 @@
 %bcond_with tests
 %bcond_without qt5
 %bcond_without ffmpeg
+%bcond_without python2
+%bcond_without python3
 Name:           opencv
 Version:        3.3.1
 Release:        0
@@ -48,12 +50,6 @@ BuildRequires:  libjasper-devel
 BuildRequires:  libjpeg-devel
 BuildRequires:  openblas-devel
 BuildRequires:  pkgconfig
-%if 0%{?suse_version} > 1325
-BuildRequires:  python2-numpy-devel
-%else
-BuildRequires:  python-numpy-devel
-%endif
-BuildRequires:  python3-numpy-devel
 BuildRequires:  tbb-devel
 BuildRequires:  unzip
 BuildRequires:  pkgconfig(IlmBase)
@@ -66,11 +62,21 @@ BuildRequires:  pkgconfig(libpng)
 BuildRequires:  pkgconfig(libtiff-4)
 BuildRequires:  pkgconfig(libv4l2)
 BuildRequires:  pkgconfig(libv4lconvert)
-BuildRequires:  pkgconfig(python)
-BuildRequires:  pkgconfig(python3)
 BuildRequires:  pkgconfig(zlib)
 Provides:       opencv-qt5
 Obsoletes:      opencv-qt5
+%if %{with python2}
+BuildRequires:  pkgconfig(python)
+%if 0%{?suse_version} > 1325
+BuildRequires:  python2-numpy-devel
+%else
+BuildRequires:  python-numpy-devel
+%endif
+%endif
+%if %{with python3}
+BuildRequires:  python3-numpy-devel
+BuildRequires:  pkgconfig(python3)
+%endif
 %if %{with qt5}
 BuildRequires:  pkgconfig(Qt5Concurrent) >= 5.2.0
 BuildRequires:  pkgconfig(Qt5Gui) >= 5.2.0
@@ -89,9 +95,6 @@ BuildRequires:  pkgconfig(libavformat)
 BuildRequires:  pkgconfig(libavutil)
 BuildRequires:  pkgconfig(libswscale)
 %endif
-%if 0%{?suse_version} != 1315 || 0%{?is_opensuse}
-BuildRequires:  python-sphinx
-%endif
 
 %description
 OpenCV means Intel® Open Source Computer Vision Library. It is a collection of C
@@ -232,33 +235,31 @@ chmod 644 %{buildroot}%{_docdir}/%{name}-doc/examples/python/*.py
 %postun -n %{libname}%{soname} -p /sbin/ldconfig
 
 %files
-%defattr(-,root,root,-)
 %{_bindir}/opencv_*
 %{_datadir}/OpenCV
 %exclude %{_datadir}/OpenCV/OpenCVConfig*.cmake
 
 %files -n %{libname}%{soname}
-%defattr(-,root,root,-)
 %{_libdir}/lib*.so.*
 
 %files devel
-%defattr(-,root,root,-)
 %{_includedir}/opencv/
 %{_includedir}/opencv2/
 %{_libdir}/lib*.so
 %{_libdir}/pkgconfig/opencv.pc
 %{_datadir}/OpenCV/OpenCVConfig*.cmake
 
+%if %{with python2}
 %files -n python2-%{name}
-%defattr(-,root,root,-)
 %{python_sitearch}/cv2.so
+%endif
 
+%if %{with python3}
 %files -n python3-%{name}
-%defattr(-,root,root,-)
 %{python3_sitearch}/cv2.%{py3_soflags}.so
+%endif
 
 %files doc
-%defattr(-,root,root,-)
 %{_docdir}/%{name}-doc/
 
 %changelog