+++ /dev/null
-diff --git a/jinja2/environment.py b/jinja2/environment.py
-index ebb5454..1b5dc40 100644
---- a/jinja2/environment.py
-+++ b/jinja2/environment.py
-@@ -570,6 +570,10 @@ class Environment(object):
- py_header = imp.get_magic() + \
- u'\xff\xff\xff\xff'.encode('iso-8859-15')
-
-+ # Python 3.3 added a source filesize to the header
-+ if sys.version_info >= (3, 3):
-+ py_header += u'\x00\x00\x00\x00'.encode('iso-8859-15')
-+
- def write_file(filename, data, mode):
- if zip:
- info = ZipInfo(filename)