diff --git a/ports/nrf/boards/simmel/mpconfigboard.mk b/ports/nrf/boards/simmel/mpconfigboard.mk
index e71ada1de6..83fda6bda1 100644
--- a/ports/nrf/boards/simmel/mpconfigboard.mk
+++ b/ports/nrf/boards/simmel/mpconfigboard.mk
@@ -11,6 +11,7 @@ MCU_CHIP = nrf52833
 
 INTERNAL_FLASH_FILESYSTEM = 1
 
+CIRCUITPY_AESIO = 1
 CIRCUITPY_AUDIOMP3 = 0
 CIRCUITPY_BUSIO = 1
 CIRCUITPY_DISPLAYIO = 0