diff --git a/python_ifirma/core.py b/python_ifirma/core.py
index a6b61ea..086213e 100644
--- a/python_ifirma/core.py
+++ b/python_ifirma/core.py
@@ -170,7 +170,7 @@ class iFirmaAPI():
         request_hash_text = "{}{}{}".format(
             url,
             self.__username,
-            self.__invoice_key_value,
+            self.__invoice_key_name,
         )
         headers = {
             "Accept": "application/pdf",
@@ -180,7 +180,6 @@ class iFirmaAPI():
         resp = requests.get(url, headers=headers)
 
         content = resp.content
-
         file_obj = six.BytesIO()
         file_obj.write(content)
         file_obj.seek(0)
diff --git a/setup.py b/setup.py
index 57ecd32..5651a90 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 
 setup(
     name="python-ifirma",
-    version="0.0.2",
+    version="0.0.3",
     packages=find_packages(),
     install_requires=[
         'requests',