diff --git a/boards/renesas/rx65n/rx65n/configs/nsh/defconfig b/boards/renesas/rx65n/rx65n/configs/nsh/defconfig
index af38345ee0..bc322f8ffd 100644
--- a/boards/renesas/rx65n/rx65n/configs/nsh/defconfig
+++ b/boards/renesas/rx65n/rx65n/configs/nsh/defconfig
@@ -5,20 +5,19 @@
 # You can then do "make savedefconfig" to generate a new defconfig file that includes your
 # modifications.
 #
-CONFIG_ARCH_BOARD_RX65N=y
+CONFIG_ARCH="renesas"
 CONFIG_ARCH_BOARD="rx65n"
+CONFIG_ARCH_BOARD_RX65N=y
+CONFIG_ARCH_CHIP="rx65n"
 CONFIG_ARCH_CHIP_R5F565NEDDFC=y
+CONFIG_ARCH_INTERRUPTSTACK=1024
 CONFIG_ARCH_RENESAS=y
 CONFIG_ARCH_STACKDUMP=y
-CONFIG_ARCH="renesas"
-CONFIG_MOTOROLA_SREC=y
-CONFIG_ENDIAN_LITTLE=y
-CONFIG_SYSTEM_NSH=y
-CONFIG_MAX_TASKS=8
+CONFIG_BUILTIN=y
 CONFIG_DEBUG_FEATURES=y
 CONFIG_DEBUG_SYMBOLS=y
-CONFIG_ARCH_INTERRUPTSTACK=1024
-CONFIG_BUILTIN=y
+CONFIG_MAX_TASKS=8
+CONFIG_MOTOROLA_SREC=y
 CONFIG_NSH_BUILTIN_APPS=y
 CONFIG_NSH_FILEIOSIZE=512
 CONFIG_NSH_LINELEN=64
@@ -29,13 +28,11 @@ CONFIG_PTHREAD_STACK_DEFAULT=1024
 CONFIG_RAM_SIZE=262144
 CONFIG_RAM_START=0x00000000
 CONFIG_RAW_BINARY=y
-CONFIG_SCI2_SERIALDRIVER=y
-CONFIG_SCI2_SERIAL_CONSOLE=y
 CONFIG_RX65N_SCI2=y
+CONFIG_SCI2_SERIAL_CONSOLE=y
 CONFIG_SDCLONE_DISABLE=y
-CONFIG_ICU=y
 CONFIG_STDIO_DISABLE_BUFFERING=y
+CONFIG_SYSTEM_NSH=y
 CONFIG_TASK_NAME_SIZE=0
-CONFIG_USER_ENTRYPOINT="nsh_main"
 CONFIG_USERMAIN_STACKSIZE=1024
-
+CONFIG_USER_ENTRYPOINT="nsh_main"
diff --git a/boards/renesas/rx65n/rx65n/scripts/Make.defs b/boards/renesas/rx65n/rx65n/scripts/Make.defs
index 4694e7c0db..ac2bbe4db4 100644
--- a/boards/renesas/rx65n/rx65n/scripts/Make.defs
+++ b/boards/renesas/rx65n/rx65n/scripts/Make.defs
@@ -42,6 +42,18 @@ else
   ARCHSCRIPT = -T$(BOARD_DIR)$(DELIM)scripts$(DELIM)linker_script.ld
 endif
 
+CROSSDEV = rx-elf-
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E -P -x c
+LD = $(CROSSDEV)ld
+STRIP = $(CROSSDEV)strip --strip-unneeded
+AR = $(CROSSDEV)ar rcs
+AS = $(CROSSDEV)as
+NM = $(CROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 endif