diff --git a/setup.py b/setup.py
index 6345380..4ea0727 100644
--- a/setup.py
+++ b/setup.py
@@ -15,4 +15,5 @@
 
 setuptools.setup(
     setup_requires=['pbr>=2.0.0'],
-    pbr=True)
+    pbr=True,
+    py_modules=[])