diff --git a/ports/esp32s2/boards/espressif_saola_1_wroom/mpconfigboard.mk b/ports/esp32s2/boards/espressif_saola_1_wroom/mpconfigboard.mk
index 6e76272659..0ccfe06ed7 100644
--- a/ports/esp32s2/boards/espressif_saola_1_wroom/mpconfigboard.mk
+++ b/ports/esp32s2/boards/espressif_saola_1_wroom/mpconfigboard.mk
@@ -17,3 +17,5 @@ CIRCUITPY_ESP_FLASH_FREQ=40m
 CIRCUITPY_ESP_FLASH_SIZE=4MB
 
 CIRCUITPY_MODULE=wroom
+
+OPTIMIZATION_LEVEL = 2