diff --git a/esp8266/mpconfigport.h b/esp8266/mpconfigport.h
index 90dbc00098..dd7092fe54 100644
--- a/esp8266/mpconfigport.h
+++ b/esp8266/mpconfigport.h
@@ -72,6 +72,8 @@
 #define MICROPY_LONGINT_IMPL        (MICROPY_LONGINT_IMPL_MPZ)
 #define MICROPY_FLOAT_IMPL          (MICROPY_FLOAT_IMPL_FLOAT)
 #define MICROPY_ERROR_REPORTING     (MICROPY_ERROR_REPORTING_NORMAL)
+#define MICROPY_WARNINGS            (1)
+#define MICROPY_PY_STR_BYTES_CMP_WARN (1)
 #define MICROPY_STREAMS_NON_BLOCK   (1)
 #define MICROPY_MODULE_FROZEN_STR   (1)
 #define MICROPY_MODULE_FROZEN_MPY   (1)