diff --git a/paynow/model.py b/paynow/model.py
index 8c66f29..af1ea5e 100644
--- a/paynow/model.py
+++ b/paynow/model.py
@@ -419,8 +419,6 @@ def __build(self, payment):
 
         """
         body = {
-            "resulturl": self.result_url,
-            "returnurl": self.return_url,
             "reference": payment.reference,
             "amount": payment.total(),
             "id": self.integration_id,
@@ -432,6 +430,8 @@ def __build(self, payment):
         for key, value in body.items():
             body[key] = quote_plus(str(value))
 
+        body['resulturl'] = self.result_url
+        body['returnurl'] = self.return_url
         body['hash'] = self.__hash(body, self.integration_key)
 
         return body
diff --git a/setup.py b/setup.py
index 3e33122..6ec2ed8 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 
 setup(
     name='paynow',  # Required
-    version='1.0.2',  # Required
+    version='1.0.3',  # Required
     description='Paynow Python SDK',  # Required
     long_description=long_description,  # Optional
     long_description_content_type='text/markdown',  # Optional (see note above)