diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index 03715e7d9d92125f15e8ade08bc58350e241c506..363fc5ec1a4eb20ee70e17ac611dd1b917a0624c 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -1465,7 +1465,7 @@ static int fwnet_probe(struct fw_unit *unit,
 
 	net->mtu = 1500U;
 	net->min_mtu = ETH_MIN_MTU;
-	net->max_mtu = ETH_MAX_MTU;
+	net->max_mtu = 0xfff;
 
 	/* Set our hardware address while we're at it */
 	ha = (union fwnet_hwaddr *)net->dev_addr;