diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index 1e0fed6..0a63c4f 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -207,8 +207,8 @@ bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x)
 	if (!x->type_offload || x->encap)
 		return false;
 
-	if ((x->xso.offload_handle && (dev == dst->path->dev)) &&
-	     !dst->child->xfrm && x->type->get_mtu) {
+	if ((!dev || (x->xso.offload_handle && (dev == dst->path->dev))) &&
+	    (!dst->child->xfrm && x->type->get_mtu)) {
 		mtu = x->type->get_mtu(x, xdst->child_mtu_cached);
 
 		if (skb->len <= mtu)