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-rw-r--r--esp8266/modnetwork.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/esp8266/modnetwork.c b/esp8266/modnetwork.c
index 86bf27ca66..ed828e5844 100644
--- a/esp8266/modnetwork.c
+++ b/esp8266/modnetwork.c
@@ -295,7 +295,7 @@ STATIC mp_obj_t esp_config(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs
switch ((uintptr_t)kwargs->table[i].key) {
case QS(MP_QSTR_mac): {
mp_buffer_info_t bufinfo;
- mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_READ);
+ mp_get_buffer_raise(kwargs->table[i].value, &bufinfo, MP_BUFFER_READ);
if (bufinfo.len != 6) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
"invalid buffer length"));