diff --git a/test/test_pymkm_helper.py b/test/test_pymkm_helper.py
index 4dfaf94..e5c5072 100644
--- a/test/test_pymkm_helper.py
+++ b/test/test_pymkm_helper.py
@@ -29,8 +29,7 @@ def test_dict_to_cardmarket_xml_request(self):
             }
         ]
 
-        add_to_stock_xml = """<?xml version='1.0' encoding='UTF-8'?>
-           <request>
+        add_to_stock_xml = """<request>
                <article>
                    <idProduct>100569</idProduct>
                    <idLanguage>1</idLanguage>