diff --git a/hsmd/hsmd.c b/hsmd/hsmd.c
index a7342a2e1..a236131f1 100644
--- a/hsmd/hsmd.c
+++ b/hsmd/hsmd.c
@@ -165,6 +165,7 @@ static struct io_plan *bad_req(struct io_conn *conn,
  * and then call handle_client with argument 'c' */
 static struct io_plan *client_read_next(struct io_conn *conn, struct client *c)
 {
+	c->msg_in = tal_free(c->msg_in);
 	return io_read_wire(conn, c, &c->msg_in, handle_client, c);
 }
 
@@ -187,6 +188,8 @@ static struct client *new_client(const tal_t *ctx,
 {
 	struct client *c = tal(ctx, struct client);
 
+	c->msg_in = NULL;
+
 	/*~ All-zero pubkey is used for the initial master connection */
 	if (id) {
 		c->id = *id;