diff --git a/net/core/filter.c b/net/core/filter.c
index 98b8057e2382..df2e40c10ec8 100755
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2097,8 +2097,6 @@ static int bpf_skb_proto_4_to_6(struct sk_buff *skb)
 			skb_shinfo(skb)->gso_type |=  SKB_GSO_TCPV6;
 		}
 
-		/* Due to IPv6 header, MSS needs to be downgraded. */
-		skb_shinfo(skb)->gso_size -= len_diff;
 		/* Header must be checked, and gso_segs recomputed. */
 		skb_shinfo(skb)->gso_type |= SKB_GSO_DODGY;
 		skb_shinfo(skb)->gso_segs = 0;
@@ -2133,8 +2131,6 @@ static int bpf_skb_proto_6_to_4(struct sk_buff *skb)
 			skb_shinfo(skb)->gso_type |=  SKB_GSO_TCPV4;
 		}
 
-		/* Due to IPv4 header, MSS can be upgraded. */
-		skb_shinfo(skb)->gso_size += len_diff;
 		/* Header must be checked, and gso_segs recomputed. */
 		skb_shinfo(skb)->gso_type |= SKB_GSO_DODGY;
 		skb_shinfo(skb)->gso_segs = 0;