diff --git a/boards/mulle/Makefile.include b/boards/mulle/Makefile.include
index 8c8511c091d3453979ff0c6c8cac4c428fb64d39..fa6f4baa7a605eaad32c41be4ef0e9be74091fa6 100644
--- a/boards/mulle/Makefile.include
+++ b/boards/mulle/Makefile.include
@@ -87,7 +87,7 @@ export OPENOCD_PRE_VERIFY_CMDS += \
   -c 'load_image $(RIOTCPU)/kinetis_common/dist/wdog-disable.bin 0x20000000 bin' \
   -c 'resume 0x20000000'
 export OPENOCD_EXTRA_INIT
-export PRE_FLASH_CHECK_SCRIPT = $(RIOTCPU)/kinetis_common/dist/check-fcfield-hex.sh
+export PRE_FLASH_CHECK_SCRIPT = $(RIOTCPU)/kinetis_common/dist/check-fcfield-elf.sh
 
 .PHONY: flash
 flash: $(RIOTCPU)/kinetis_common/dist/wdog-disable.bin