diff --git a/ups/worldship_api.py b/ups/worldship_api.py
index 87eca44..d30b994 100644
--- a/ups/worldship_api.py
+++ b/ups/worldship_api.py
@@ -180,7 +180,7 @@ def get_xml(cls, *args, **kwargs):
             open_shipment, xmlns="x-schema:OpenShipments.xdr"
         )
         full_xml = '\n'.join([
-            '<?xml version="1.0" encoding="UTF-8" ?>',
+            '<?xml version="1.0" ?>',
             etree.tostring(open_shipments, pretty_print=True),
         ])
         return full_xml