diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index 8c32abad162f0edb9dfef35d66fdf29fdf506870..494f00b9c5ef4bce0a34a537e83c23bc7b956c5a 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -671,10 +671,13 @@ static int gtp_newlink(struct net *src_net, struct net_device *dev,
 	if (err < 0)
 		return err;
 
-	if (!data[IFLA_GTP_PDP_HASHSIZE])
+	if (!data[IFLA_GTP_PDP_HASHSIZE]) {
 		hashsize = 1024;
-	else
+	} else {
 		hashsize = nla_get_u32(data[IFLA_GTP_PDP_HASHSIZE]);
+		if (!hashsize)
+			hashsize = 1024;
+	}
 
 	err = gtp_hashtable_new(gtp, hashsize);
 	if (err < 0)