diff --git a/auth/views.py b/auth/views.py
index 605fe175fc09ecb28bedbd439505e433718658cf..7c3e1b9e0080932d322686bd1ddaab63833ddb71 100644
--- a/auth/views.py
+++ b/auth/views.py
@@ -84,7 +84,7 @@ def do_local_logout(request):
 
   # let's clean up the self-referential issue:
   field_names_to_save = set(field_names_to_save)
-  field_names_to_save.remove(FIELDS_TO_SAVE)
+  field_names_to_save = field_names_to_save - set([FIELDS_TO_SAVE])
   field_names_to_save = list(field_names_to_save)
 
   fields_to_save = dict([(name, request.session.get(name, None)) for name in field_names_to_save])
diff --git a/fabfile.py b/fabfile.py
index 01c14d9659a1e25170637a55186d109a461a7214..b47ec41f2ccb193757c8589c89bbf7b7e3989c28 100644
--- a/fabfile.py
+++ b/fabfile.py
@@ -35,6 +35,7 @@ def check_tag(tag, path):
         abort("no local tag %s" % tag)
 
     with cd(path):
+        run('git pull origin master')
         result = run('git tag')
         if tag not in result.split("\n"):
             abort("no remote tag %s" % tag)