diff --git a/scapy/contrib/ospf.py b/scapy/contrib/ospf.py
index 8b316ca55e96ed93a065c8c24a6cdf8a458f6c2e..fe79886253fd1602e340e4415b9a69915709bc96 100644
--- a/scapy/contrib/ospf.py
+++ b/scapy/contrib/ospf.py
@@ -260,7 +260,7 @@ class OSPF_Link(Packet):
 def _LSAGuessPayloadClass(p, **kargs):
     """ Guess the correct LSA class for a given payload """
     # This is heavily based on scapy-cdp.py by Nicolas Bareil and Arnaud Ebalard
-    # XXX: This only works if all payload
+    
     cls = conf.raw_layer
     if len(p) >= 4:
         typ = struct.unpack("!B", p[3])[0]
@@ -410,7 +410,7 @@ class OSPF_LSReq(Packet):
 class OSPF_LSUpd(Packet):
     name = "OSPF Link State Update"
     fields_desc = [FieldLenField("lsacount", None, fmt="!I", count_of="lsalist"),
-                   PacketListField("lsalist", [], _LSAGuessPayloadClass,
+                   PacketListField("lsalist", None, _LSAGuessPayloadClass,
                                 count_from = lambda pkt: pkt.lsacount,
                                 length_from = lambda pkt: pkt.underlayer.len - 24)]
 
diff --git a/scapy/fields.py b/scapy/fields.py
index 28ff64d9f51ba9a7ce0012f7829f0f2904b58898..7316105552113b16fbcbfdde2c58cc01c4f52e6d 100644
--- a/scapy/fields.py
+++ b/scapy/fields.py
@@ -439,7 +439,6 @@ class PacketListField(PacketField):
         self.count_from = count_from
         self.length_from = length_from
 
-
     def any2i(self, pkt, x):
         if not isinstance(x, list):
             return [x]