diff --git a/python-packaging.spec b/python-packaging.spec
index 3ccae48..6f117ab 100644
--- a/python-packaging.spec
+++ b/python-packaging.spec
@@ -1,3 +1,4 @@
+%global _with_bootstrap 1
 %global pypi_name packaging
 
 # Specify --with bootstrap to build in bootstrap mode