diff --git a/openerp/addons/base/ir/ir_ui_view.py b/openerp/addons/base/ir/ir_ui_view.py
index 6c9463b671e..8fcb794b08e 100644
--- a/openerp/addons/base/ir/ir_ui_view.py
+++ b/openerp/addons/base/ir/ir_ui_view.py
@@ -125,8 +125,6 @@ class view(osv.osv):
         return result
 
     def graph_get(self, cr, uid, id, model, node_obj, conn_obj, src_node, des_node, label, scale, context=None):
-        if not label:
-            label = []
         nodes=[]
         nodes_name=[]
         transitions=[]
diff --git a/openerp/addons/base/module/wizard/base_update_translations.py b/openerp/addons/base/module/wizard/base_update_translations.py
index 0a9f5e9cca9..d24851b1cd5 100644
--- a/openerp/addons/base/module/wizard/base_update_translations.py
+++ b/openerp/addons/base/module/wizard/base_update_translations.py
@@ -23,6 +23,7 @@ from osv import osv, fields
 import tools
 import pooler
 import cStringIO
+from tools.translate import _
 
 class base_update_translations(osv.osv_memory):
     def _get_languages(self, cr, uid, context):
diff --git a/openerp/report/render/rml2txt/utils.py b/openerp/report/render/rml2txt/utils.py
index 122411afb2d..174612d847e 100644
--- a/openerp/report/render/rml2txt/utils.py
+++ b/openerp/report/render/rml2txt/utils.py
@@ -19,6 +19,7 @@
 #
 ##############################################################################
 
+import copy
 import re
 import reportlab
 import reportlab.lib.units
diff --git a/openerp/tools/safe_eval.py b/openerp/tools/safe_eval.py
index c7ded2923ed..a542fa44a42 100644
--- a/openerp/tools/safe_eval.py
+++ b/openerp/tools/safe_eval.py
@@ -36,7 +36,7 @@ from types import CodeType
 import logging
 import os
 
-__all__ = ['test_expr', 'safe_eval', 'const_eval', 'ext_eval' ]
+__all__ = ['test_expr', 'safe_eval', 'const_eval']
 
 # The time module is usually already provided in the safe_eval environment
 # but some code, e.g. datetime.datetime.now() (Windows/Python 2.5.2, bug