diff --git a/boards/arm/stm32/nucleo-f446re/src/Make.defs b/boards/arm/stm32/nucleo-f446re/src/Make.defs
index 71457a52b4..34acbcb5f1 100644
--- a/boards/arm/stm32/nucleo-f446re/src/Make.defs
+++ b/boards/arm/stm32/nucleo-f446re/src/Make.defs
@@ -36,7 +36,7 @@ ifeq ($(CONFIG_LCD_ILI9225),y)
 CSRCS +=  stm32_ili9225.c
 endif
 
-ifeq ($(CONFIG_STM32_FOC),n)
+ifneq ($(CONFIG_STM32_FOC),y)
 ifeq ($(CONFIG_ADC),y)
 CSRCS += stm32_adc.c
 ifeq ($(CONFIG_INPUT_AJOYSTICK),y)