diff --git a/registration/signals.py b/registration/signals.py
index 013fcd75..f7a31312 100644
--- a/registration/signals.py
+++ b/registration/signals.py
@@ -12,10 +12,11 @@
 
 def login_user(sender, user, request, **kwargs):
     """ Automatically authenticate the user when activated  """
-    if getattr(settings, 'REGISTRATION_AUTO_LOGIN', False ):
-        backend = get_backends()[0]  # Hack to bypass `authenticate()`.
-        user.backend = "%s.%s" % (backend.__module__, backend.__class__.__name__)
-        login(request, user)
-        request.session['REGISTRATION_AUTO_LOGIN'] = True
-        request.session.modified = True
-user_activated.connect(login_user)
\ No newline at end of file
+    backend = get_backends()[0]  # Hack to bypass `authenticate()`.
+    user.backend = "%s.%s" % (backend.__module__, backend.__class__.__name__)
+    login(request, user)
+    request.session['REGISTRATION_AUTO_LOGIN'] = True
+    request.session.modified = True
+
+if getattr(settings, 'REGISTRATION_AUTO_LOGIN', False):
+    user_activated.connect(login_user)
\ No newline at end of file