diff --git a/chip-update-firmware.sh b/chip-update-firmware.sh
index f985adb..63bddd9 100755
--- a/chip-update-firmware.sh
+++ b/chip-update-firmware.sh
@@ -64,5 +64,5 @@ cache_download "${FW_IMAGE_DIR}" uboot-env.bin
 cache_download "${FW_IMAGE_DIR}" zImage
 cache_download "${FW_IMAGE_DIR}" u-boot-dtb.bin
 
-RETURNVAL=$(BUILDROOT_OUTPUT_DIR="${FW_DIR}" ${FLASH_SCRIPT})
-exit $(( ${RETURNVAL} ))
+BUILDROOT_OUTPUT_DIR="${FW_DIR}" ${FLASH_SCRIPT}
+exit $?