diff --git a/python-repoze.sphinx.autointerface.spec b/python-repoze.sphinx.autointerface.spec
index 4a29a71..981f8cb 100644
--- a/python-repoze.sphinx.autointerface.spec
+++ b/python-repoze.sphinx.autointerface.spec
@@ -61,6 +61,7 @@ zope.interface instances in code.
 %{python_sitelib}/repoze/sphinx/autointerface.py
 %{python_sitelib}/repoze[._]sphinx[._]autointerface-%{version}*-info
 %{python_sitelib}/repoze[._]sphinx[._]autointerface-%{version}*nspkg.pth
+%pycache_only %dir %{python_sitelib}/repoze/sphinx/__pycache__
 %pycache_only %{python_sitelib}/repoze/sphinx/__pycache__/autointerface*
 
 %changelog