diff --git a/ports/espressif/mpconfigport.mk b/ports/espressif/mpconfigport.mk
index 66c7befd11c5d..08a4f7bdf9cb0 100644
--- a/ports/espressif/mpconfigport.mk
+++ b/ports/espressif/mpconfigport.mk
@@ -82,6 +82,7 @@ CIRCUITPY_PS2IO ?= 1
 CIRCUITPY_RGBMATRIX ?= 1
 CIRCUITPY_ROTARYIO ?= 1
 CIRCUITPY_SDIOIO ?= 1
+CIRCUITPY_SETTABLE_PROCESSOR_FREQUENCY ?= 1
 CIRCUITPY_SYNTHIO_MAX_CHANNELS ?= 12
 CIRCUITPY_TOUCHIO_USE_NATIVE ?= 1
 CIRCUITPY_WATCHDOG ?= 1