diff --git a/src/drivers/driver_privsep.c b/src/drivers/driver_privsep.c
index 1cfc15dce..64a65a672 100644
--- a/src/drivers/driver_privsep.c
+++ b/src/drivers/driver_privsep.c
@@ -703,6 +703,10 @@ static int wpa_driver_privsep_get_capa(void *priv,
 	res = wpa_priv_cmd(drv, PRIVSEP_CMD_GET_CAPA, NULL, 0, capa, &len);
 	if (res < 0 || len != sizeof(*capa))
 		return -1;
+	/* For now, no support for passing extended_capa pointers */
+	capa->extended_capa = NULL;
+	capa->extended_capa_mask = NULL;
+	capa->extended_capa_len = 0;
 	return 0;
 }
 
diff --git a/wpa_supplicant/wpa_priv.c b/wpa_supplicant/wpa_priv.c
index a7aa4302d..c8335fc15 100644
--- a/wpa_supplicant/wpa_priv.c
+++ b/wpa_supplicant/wpa_priv.c
@@ -330,6 +330,10 @@ static void wpa_priv_cmd_get_capa(struct wpa_priv_interface *iface,
 	    iface->driver->get_capa(iface->drv_priv, &capa) < 0)
 		goto fail;
 
+	/* For now, no support for passing extended_capa pointers */
+	capa.extended_capa = NULL;
+	capa.extended_capa_mask = NULL;
+	capa.extended_capa_len = 0;
 	sendto(iface->fd, &capa, sizeof(capa), 0, (struct sockaddr *) from,
 	       sizeof(*from));
 	return;