diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
index 5028c72d494a..c8129782d39d 100644
--- a/net/ipv4/gre_offload.c
+++ b/net/ipv4/gre_offload.c
@@ -242,7 +242,7 @@ static int gre_gro_complete(struct sk_buff *skb, int nhoff)
 	__be16 type;
 
 	skb->encapsulation = 1;
-	skb_shinfo(skb)->gso_type = SKB_GSO_GRE;
+	skb_shinfo(skb)->gso_type |= SKB_GSO_GRE;
 
 	type = greh->protocol;
 	if (greh->flags & GRE_KEY)