diff -r 21461f80f348 -r 38c7598b5c61 server/session.py
--- a/server/session.py	Wed Jun 11 17:14:32 2014 +0200
+++ b/server/session.py	Wed Jun 11 17:58:19 2014 +0200
@@ -245,7 +245,6 @@
       read/write security is currently activated.
 
     """
-    mode = 'write'
     is_request = False
     hooks_in_progress = False
     is_repo_in_memory = True # bw compat