diff --git a/setup.py b/setup.py
index f3972f253..ba50580fc 100755
--- a/setup.py
+++ b/setup.py
@@ -37,4 +37,5 @@
     # Remove any local stuff to mimic pbr
     use_scm_version={'local_scheme': lambda v: ""},
     cmdclass=cmdclass,
+    py_modules=[],
 )