diff --git a/base_report_to_printer/__init__.py b/base_report_to_printer/__init__.py
index 456cc25..f97883c 100644
--- a/base_report_to_printer/__init__.py
+++ b/base_report_to_printer/__init__.py
@@ -21,5 +21,5 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
-import printing
-import wizard
+from . import printing
+from . import wizard
diff --git a/base_report_to_printer/printing.py b/base_report_to_printer/printing.py
index b77aac0..4b9555c 100644
--- a/base_report_to_printer/printing.py
+++ b/base_report_to_printer/printing.py
@@ -23,24 +23,19 @@
 ##############################################################################
 
 import os
+import time
 import base64
-import threading
 from tempfile import mkstemp
+import logging
 
 import cups
-import thread
 from threading import Thread
 from threading import Lock
 
-import netsvc
-import tools
-import time
+from openerp import pooler
 from openero.osv import orm, fields
-import pooler
-import tools
-from tools.translate import _
-from base_calendar import base_calendar
-import logging
+from openerp.tools.translate import _
+from openerp.addons.base_calendar import base_calendar
 
 
 #
diff --git a/base_report_to_printer/wizard/__init__.py b/base_report_to_printer/wizard/__init__.py
index ad46a5d..926dc43 100644
--- a/base_report_to_printer/wizard/__init__.py
+++ b/base_report_to_printer/wizard/__init__.py
@@ -20,4 +20,4 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
-import update_printers
+from . import update_printers
diff --git a/base_report_to_printer/wizard/update_printers.py b/base_report_to_printer/wizard/update_printers.py
index ff6b8d7..9b7a240 100644
--- a/base_report_to_printer/wizard/update_printers.py
+++ b/base_report_to_printer/wizard/update_printers.py
@@ -21,13 +21,9 @@
 #
 ##############################################################################
 
-import time
-import subprocess
 import cups
 
-import netsvc
-from openerp.osv import orm, fields
-from tools.translate import _
+from openerp.osv import orm
 
 
 class printing_printer_update_wizard(orm.TransientModel):