diff --git a/esp8266/modmachine.c b/esp8266/modmachine.c
index df1ae0fcf6..a8d2de8bb8 100644
--- a/esp8266/modmachine.c
+++ b/esp8266/modmachine.c
@@ -260,7 +260,7 @@ STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_DEEPSLEEP), MP_ROM_INT(MACHINE_WAKE_DEEPSLEEP) },
 
     // reset causes
-    { MP_ROM_QSTR(MP_QSTR_PWR_ON_RESET), MP_ROM_INT(REASON_EXT_SYS_RST) },
+    { MP_ROM_QSTR(MP_QSTR_PWR_ON_RESET), MP_ROM_INT(REASON_DEFAULT_RST) },
     { MP_ROM_QSTR(MP_QSTR_HARD_RESET), MP_ROM_INT(REASON_EXT_SYS_RST) },
     { MP_ROM_QSTR(MP_QSTR_DEEPSLEEP_RESET), MP_ROM_INT(REASON_DEEP_SLEEP_AWAKE) },
     { MP_ROM_QSTR(MP_QSTR_WDT_RESET), MP_ROM_INT(REASON_WDT_RST) },