diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 05ebce2881ef..85c487b8572b 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1345,7 +1345,7 @@ static int ipgre_tap_validate(struct nlattr *tb[], struct nlattr *data[])
 static void ipgre_netlink_parms(struct nlattr *data[],
 				struct ip_tunnel_parm *parms)
 {
-	memset(parms, 0, sizeof(parms));
+	memset(parms, 0, sizeof(*parms));
 
 	parms->iph.protocol = IPPROTO_GRE;