diff --git a/gestionatr/cli.py b/gestionatr/cli.py
index 8534b3c..7911075 100644
--- a/gestionatr/cli.py
+++ b/gestionatr/cli.py
@@ -127,7 +127,7 @@ def request_atr_29(url, user, password, xml_str=None, params=None):
     # Clean XML
     xml_str = xml_str.strip()
     xml_str = xml_str.replace("'utf-8'", "'UTF-8'")
-    xml_str = xml_str.replace("<?xml version='1.0' encoding='UTF-8'?>", "")
+    xml_str = re.sub(r'<\?.*\?>', '', xml_str)
     xml_str = xml_str.replace("""<sctdapplication xmlns="http://localhost/sctd/A529">""", "")
     xml_str = xml_str.replace("""</sctdapplication>""", "")
     xml_str = xml_str.replace("<", "<a529:")