diff --git a/bsp/nxp/mcx/mcxa/frdm-mcxa153/board/Kconfig b/bsp/nxp/mcx/mcxa/frdm-mcxa153/board/Kconfig
index 3119899ba7..1e70e21f45 100644
--- a/bsp/nxp/mcx/mcxa/frdm-mcxa153/board/Kconfig
+++ b/bsp/nxp/mcx/mcxa/frdm-mcxa153/board/Kconfig
@@ -125,18 +125,18 @@ menu "On-chip Peripheral Drivers"
         config BSP_USING_PWM
             bool "Enable PWM"
             select RT_USING_PWM
-            default N
+            default n
 
             if BSP_USING_PWM
                 config BSP_USING_PWM0
                     bool "Enable eFlex PWM0"
-                    default N
+                    default n
 		config BSP_USING_PWM1
                     bool "Enable eFlex PWM1"
-                    default N
+                    default n
 		config BSP_USING_PWM2
                     bool "Enable eFlex PWM2"
-                    default N
+                    default n
             endif
 endmenu