diff --git a/addons/hw_escpos/controllers/main.py b/addons/hw_escpos/controllers/main.py
index d284d05dfdd..88e852ff667 100644
--- a/addons/hw_escpos/controllers/main.py
+++ b/addons/hw_escpos/controllers/main.py
@@ -10,7 +10,12 @@ import random
 import math
 import openerp.addons.hw_proxy.controllers.main as hw_proxy
 import subprocess
-import usb.core
+
+try:
+    import usb.core
+except: ImportError:
+    usb = None
+
 from openerp.tools.translate import _
 from .. import escpos
 from ..escpos import printer
diff --git a/addons/hw_escpos/escpos/escpos.py b/addons/hw_escpos/escpos/escpos.py
index 9296568b4fc..ae692f34fd2 100644
--- a/addons/hw_escpos/escpos/escpos.py
+++ b/addons/hw_escpos/escpos/escpos.py
@@ -7,13 +7,18 @@
 '''
 
 import Image
-import qrcode
+
+try: 
+    import qrcode
+except ImportError:
+    qrcode = None
+
 import time
 import copy
 
 try:
     import jcconv
-except:
+except ImportError:
     jcconv = None
     print 'ESC/POS: please install jcconv for improved Japanese receipt printing:'
     print ' # pip install jcconv'