diff --git a/eopayment/__init__.py b/eopayment/__init__.py
index 7a15cbc..1f6d89c 100644
--- a/eopayment/__init__.py
+++ b/eopayment/__init__.py
@@ -2,8 +2,8 @@
 
 import logging
 
-from common import (URL, HTML, FORM, RECEIVED, ACCEPTED, PAID, DENIED,
-                    CANCELED, CANCELLED, ERROR, WAITING, ResponseError, force_text)
+from .common import (URL, HTML, FORM, RECEIVED, ACCEPTED, PAID, DENIED,
+                     CANCELED, CANCELLED, ERROR, WAITING, ResponseError, force_text)
 
 __all__ = ['Payment', 'URL', 'HTML', 'FORM', 'SIPS',
 'SYSTEMPAY', 'SPPLUS', 'TIPI', 'DUMMY', 'get_backend', 'RECEIVED', 'ACCEPTED',
diff --git a/eopayment/dummy.py b/eopayment/dummy.py
index 2ed8655..2b79258 100644
--- a/eopayment/dummy.py
+++ b/eopayment/dummy.py
@@ -10,7 +10,7 @@ try:
 except ImportError:
     from urlparse import parse_qs
 
-from common import PaymentCommon, URL, PaymentResponse, PAID, ERROR, WAITING, ResponseError
+from .common import PaymentCommon, URL, PaymentResponse, PAID, ERROR, WAITING, ResponseError
 
 __all__ = [ 'Payment' ]
 
diff --git a/eopayment/ogone.py b/eopayment/ogone.py
index 900d348..8edb106 100644
--- a/eopayment/ogone.py
+++ b/eopayment/ogone.py
@@ -4,7 +4,7 @@ import string
 import urlparse
 from decimal import Decimal, ROUND_HALF_UP
 
-from common import (PaymentCommon, PaymentResponse, FORM, CANCELLED, PAID,
+from .common import (PaymentCommon, PaymentResponse, FORM, CANCELLED, PAID,
         ERROR, Form, DENIED, ACCEPTED, ORDERID_TRANSACTION_SEPARATOR,
         WAITING, ResponseError, force_byte, force_text)
 def N_(message): return message
diff --git a/eopayment/paybox.py b/eopayment/paybox.py
index 2ebed40..53bf456 100644
--- a/eopayment/paybox.py
+++ b/eopayment/paybox.py
@@ -16,7 +16,7 @@ from gettext import gettext as _
 import string
 import warnings
 
-from common import (PaymentCommon, PaymentResponse, FORM, PAID, ERROR, Form,
+from .common import (PaymentCommon, PaymentResponse, FORM, PAID, ERROR, Form,
         ORDERID_TRANSACTION_SEPARATOR, ResponseError)
 
 __all__ = ['sign', 'Payment']
diff --git a/eopayment/sips.py b/eopayment/sips.py
index ef5f1c6..bc17b16 100644
--- a/eopayment/sips.py
+++ b/eopayment/sips.py
@@ -9,8 +9,8 @@ import os.path
 import uuid
 import warnings
 
-from common import PaymentCommon, HTML, PaymentResponse, ResponseError
-from cb import CB_RESPONSE_CODES
+from .common import PaymentCommon, HTML, PaymentResponse, ResponseError
+from .cb import CB_RESPONSE_CODES
 
 '''
 Payment backend module for the ATOS/SIPS system used by many Frenck banks.
diff --git a/eopayment/sips2.py b/eopayment/sips2.py
index 584ec56..1e4cc52 100644
--- a/eopayment/sips2.py
+++ b/eopayment/sips2.py
@@ -11,7 +11,7 @@ from gettext import gettext as _
 import requests
 import warnings
 
-from common import (PaymentCommon, FORM, Form, PaymentResponse, PAID, ERROR,
+from .common import (PaymentCommon, FORM, Form, PaymentResponse, PAID, ERROR,
         CANCELED, ResponseError)
 
 __all__ = ['Payment']
diff --git a/eopayment/spplus.py b/eopayment/spplus.py
index d6e7b48..854a96c 100644
--- a/eopayment/spplus.py
+++ b/eopayment/spplus.py
@@ -13,7 +13,7 @@ import re
 import warnings
 
 import Crypto.Cipher.DES
-from common import (PaymentCommon, URL, PaymentResponse, RECEIVED, ACCEPTED,
+from .common import (PaymentCommon, URL, PaymentResponse, RECEIVED, ACCEPTED,
         PAID, ERROR, ResponseError)
 
 def N_(message): return message
diff --git a/eopayment/systempayv2.py b/eopayment/systempayv2.py
index ccf38d0..d9153a4 100644
--- a/eopayment/systempayv2.py
+++ b/eopayment/systempayv2.py
@@ -8,9 +8,9 @@ import urlparse
 import warnings
 from gettext import gettext as _
 
-from common import (PaymentCommon, PaymentResponse, PAID, ERROR, FORM, Form,
-                    ResponseError, force_text, force_byte)
-from cb import CB_RESPONSE_CODES
+from .common import (PaymentCommon, PaymentResponse, PAID, ERROR, FORM, Form,
+                     ResponseError, force_text, force_byte)
+from .cb import CB_RESPONSE_CODES
 
 __all__ = ['Payment']
 
diff --git a/eopayment/tipi.py b/eopayment/tipi.py
index 3a3b571..2839f7c 100644
--- a/eopayment/tipi.py
+++ b/eopayment/tipi.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 
 from decimal import Decimal, ROUND_DOWN
-from common import (PaymentCommon, PaymentResponse, URL, PAID, DENIED,
+from .common import (PaymentCommon, PaymentResponse, URL, PAID, DENIED,
         CANCELLED, ERROR, ResponseError)
 from urllib import urlencode
 from urlparse import parse_qs