diff --git a/django/template/__init__.py b/django/template/__init__.py
index dafa0696f7..7a1c85174c 100644
--- a/django/template/__init__.py
+++ b/django/template/__init__.py
@@ -159,7 +159,7 @@ class Template(object):
             template_string = smart_unicode(template_string)
         except UnicodeDecodeError:
             raise TemplateEncodingError("Templates can only be constructed from unicode or UTF-8 strings.")
-        if settings.TEMPLATE_DEBUG and origin == None:
+        if settings.TEMPLATE_DEBUG and origin is None:
             origin = StringOrigin(template_string)
             # Could do some crazy stack-frame stuff to record where this string
             # came from...