diff --git a/Gurux.DLMS.python/gurux_dlms/GXDLMSChippering.py b/Gurux.DLMS.python/gurux_dlms/GXDLMSChippering.py
index 3ec5a5a..0932032 100644
--- a/Gurux.DLMS.python/gurux_dlms/GXDLMSChippering.py
+++ b/Gurux.DLMS.python/gurux_dlms/GXDLMSChippering.py
@@ -187,7 +187,7 @@ def decryptAesGcm(cls, settings, p, data):
                 if p.xml and p.xml.comments:
                     p.xml.appendComment(
                         _GXCommon.systemTitleToString(
-                            Standard.DLMS, p.systemTitle, True
+                            settings.standard, p.systemTitle, True
                         )
                     )
         elif cmd in (