diff --git a/meta-google/classes/image_types_hoth.bbclass b/meta-google/classes/image_types_hoth.bbclass
index ae65d61..5ad64f9 100644
--- a/meta-google/classes/image_types_hoth.bbclass
+++ b/meta-google/classes/image_types_hoth.bbclass
@@ -9,7 +9,7 @@
 FLASH_HOTH_UPDATE_OFFSET:hoth:aarch64 = "${@61376 if FLASH_SIZE == '65536' else 31744}"
 
 # Leave a zero-size u-boot env partition.
-FLASH_UBOOT_ENV_OFFSET = ${FLASH_KERNEL_OFFSET}
+FLASH_UBOOT_ENV_OFFSET = "${FLASH_KERNEL_OFFSET}"
 
 python do_generate_static:append() {
     _append_image(os.path.join(d.getVar('DEPLOY_DIR_IMAGE', True),