diff -r 6505bfc65a6d pep-3149.txt
--- a/pep-3149.txt	Wed Mar 20 08:21:20 2013 -0700
+++ b/pep-3149.txt	Wed Mar 20 14:40:35 2013 -0700
@@ -130,12 +130,12 @@
 changed.  The tag and extension module suffix are available through
 the ``sysconfig`` modules via the following variables::
 
-    >>> sysconfig.get_config_var('SO')
+    >>> sysconfig.get_config_var('EXT_SUFFIX')
     '.cpython-32mu.so'
     >>> sysconfig.get_config_var('SOABI')
     'cpython-32mu'
 
-Note that ``$SOABI`` contains just the tag, while ``$SO`` includes the
+Note that ``$SOABI`` contains just the tag, while ``$EXT_SUFFIX`` includes the
 platform extension for shared library files, and is the exact suffix
 added to the extension module name.