diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.mk b/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.mk
index a8d02f082c..6d78999532 100644
--- a/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.mk
+++ b/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.mk
@@ -9,5 +9,4 @@ CIRCUITPY_ESP_FLASH_MODE = qio
 CIRCUITPY_ESP_FLASH_FREQ = 40m
 CIRCUITPY_ESP_FLASH_SIZE = 4MB
 
-OPTIMIZATION_FLAGS = -Os
 CIRCUITPY_ESPCAMERA = 0
diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_reverse_tft/mpconfigboard.mk b/ports/espressif/boards/adafruit_feather_esp32s3_reverse_tft/mpconfigboard.mk
index 3fdb028f5e..d027443f56 100644
--- a/ports/espressif/boards/adafruit_feather_esp32s3_reverse_tft/mpconfigboard.mk
+++ b/ports/espressif/boards/adafruit_feather_esp32s3_reverse_tft/mpconfigboard.mk
@@ -9,3 +9,5 @@ IDF_TARGET = esp32s3
 CIRCUITPY_ESP_FLASH_MODE = dio
 CIRCUITPY_ESP_FLASH_FREQ = 40m
 CIRCUITPY_ESP_FLASH_SIZE = 4MB
+
+CIRCUITPY_ESPCAMERA = 0
diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_tft/mpconfigboard.mk b/ports/espressif/boards/adafruit_feather_esp32s3_tft/mpconfigboard.mk
index 858d0b1859..d801afd493 100644
--- a/ports/espressif/boards/adafruit_feather_esp32s3_tft/mpconfigboard.mk
+++ b/ports/espressif/boards/adafruit_feather_esp32s3_tft/mpconfigboard.mk
@@ -10,5 +10,4 @@ CIRCUITPY_ESP_FLASH_MODE = dio
 CIRCUITPY_ESP_FLASH_FREQ = 40m
 CIRCUITPY_ESP_FLASH_SIZE = 4MB
 
-OPTIMIZATION_FLAGS = -Os
 CIRCUITPY_ESPCAMERA = 0
diff --git a/ports/espressif/boards/lolin_s3/mpconfigboard.mk b/ports/espressif/boards/lolin_s3/mpconfigboard.mk
index c81e3e6fb9..56b42a419c 100644
--- a/ports/espressif/boards/lolin_s3/mpconfigboard.mk
+++ b/ports/espressif/boards/lolin_s3/mpconfigboard.mk
@@ -9,5 +9,4 @@ CIRCUITPY_ESP_FLASH_MODE = qio
 CIRCUITPY_ESP_FLASH_FREQ = 80m
 CIRCUITPY_ESP_FLASH_SIZE = 16MB
 
-OPTIMIZATION_FLAGS = -Os
 CIRCUITPY_ESPCAMERA = 0