1 diff --git a/scapy/contrib/mpls.py b/scapy/contrib/mpls.py
2 index 640a0c5..6af1d4a 100644
3 --- a/scapy/contrib/mpls.py
4 +++ b/scapy/contrib/mpls.py
5 @@ -18,6 +18,8 @@ class MPLS(Packet):
7 def guess_payload_class(self, payload):
11 ip_version = (ord(payload[0]) >> 4) & 0xF