diff --git a/autoapi/mappers/base.py b/autoapi/mappers/base.py
index 06f023c..6ec0dc4 100644
--- a/autoapi/mappers/base.py
+++ b/autoapi/mappers/base.py
@@ -120,7 +120,7 @@ class PythonMapperBase(object):
         slug = unidecode.unidecode(slug)
         slug = slug.replace('-', '')
         slug = re.sub(r'[^\w\.]+', '-', slug).strip('-')
-        return slug.split('.')[-1]
+        return os.path.join(*slug.split('.'))
 
     def include_dir(self, root):
         """Return directory of file"""