diff --git a/django/__init__.py b/django/__init__.py
index 7838f2d2de..6a627d93ca 100644
--- a/django/__init__.py
+++ b/django/__init__.py
@@ -1,4 +1,4 @@
-VERSION = (1, 0, 'alpha 2')
+VERSION = (1, 0, 'alpha_2')
 
 def get_version():
     "Returns the version as a human-format string."