diff --git a/ryu/ofproto/ofproto_v1_2_parser.py b/ryu/ofproto/ofproto_v1_2_parser.py
index 61618a88..e95c2b35 100644
--- a/ryu/ofproto/ofproto_v1_2_parser.py
+++ b/ryu/ofproto/ofproto_v1_2_parser.py
@@ -2104,16 +2104,6 @@ class MTVlanVid(OFPMatchField):
         self.value = value
         self.mask = mask
 
-    @classmethod
-    def field_parser(cls, header, buf, offset):
-        m = super(MTVlanVid, cls).field_parser(header, buf, offset)
-        m.value &= ~ofproto_v1_2.OFPVID_PRESENT
-        return m
-
-    def serialize(self, buf, offset):
-        self.value |= ofproto_v1_2.OFPVID_PRESENT
-        super(MTVlanVid, self).serialize(buf, offset)
-
 
 @OFPMatchField.register_field_header([ofproto_v1_2.OXM_OF_VLAN_PCP])
 class MTVlanPcp(OFPMatchField):