diff --git a/python-service-identity.spec b/python-service-identity.spec
index 993f552..e920672 100644
--- a/python-service-identity.spec
+++ b/python-service-identity.spec
@@ -108,13 +108,13 @@ popd
 
 # https://bitbucket.org/hpk42/pytest/issue/539/pytest-doctest-modules-fails-if-python
 echo "collect_ignore = ['build']" >> conftest.py
-py.test --doctest-modules --doctest-glob='*.rst'
+PYTHONPATH="%{buildroot}/%{python2_sitelib}" py.test --doctest-modules --doctest-glob='*.rst'
 
 %if 0%{?with_python3}
 pushd %{py3dir}
 # https://bitbucket.org/hpk42/pytest/issue/539/pytest-doctest-modules-fails-if-python
 echo "collect_ignore = ['build']" >> conftest.py
-py.test --doctest-modules --doctest-glob='*.rst'
+PYTHONPATH="%{buildroot}/%{python3_sitelib}" py.test --doctest-modules --doctest-glob='*.rst'
 popd
 %endif # with_python3
 %endif # fedora > 20