diff --git a/pySim/tlv.py b/pySim/tlv.py
index 3b27b5e..05f824e 100644
--- a/pySim/tlv.py
+++ b/pySim/tlv.py
@@ -338,6 +338,8 @@
         while len(remainder):
             # obtain the tag at the start of the remainder
             tag, r = first._parse_tag_raw(remainder)
+            if tag == None:
+                return res
             if tag in self.members_by_tag:
                 cls = self.members_by_tag[tag]
                 # create an instance and parse accordingly