diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
index 746a7b10d434..31da9f512583 100644
--- a/net/ipv4/gre_offload.c
+++ b/net/ipv4/gre_offload.c
@@ -250,7 +250,7 @@ out:
 	return pp;
 }
 
-int gre_gro_complete(struct sk_buff *skb, int nhoff)
+static int gre_gro_complete(struct sk_buff *skb, int nhoff)
 {
 	struct gre_base_hdr *greh = (struct gre_base_hdr *)(skb->data + nhoff);
 	struct packet_offload *ptype;