diff --git a/ports/stm32f4/common-hal/analogio/AnalogIn.c b/ports/stm32f4/common-hal/analogio/AnalogIn.c
index 9889f66c12..f4cf022d13 100644
--- a/ports/stm32f4/common-hal/analogio/AnalogIn.c
+++ b/ports/stm32f4/common-hal/analogio/AnalogIn.c
@@ -36,8 +36,6 @@
 #include "stm32f4xx_ll_adc.h"
 #include "stm32f4xx_ll_bus.h"
 
-//mp_raise_ValueError(translate("U dun goofed"));
-
 void common_hal_analogio_analogin_construct(analogio_analogin_obj_t* self,
         const mcu_pin_obj_t *pin) {