diff --git a/core/soong_config.mk b/core/soong_config.mk
index 739905d..ba59f5e 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -441,6 +441,7 @@
   $(call add_json_str, BoardPrebuiltBootimage, $(BOARD_PREBUILT_BOOT_IMAGE))
   $(call add_json_str, BoardPrebuiltInitBootimage, $(BOARD_PREBUILT_INIT_BOOT_IMAGE))
   $(call add_json_str, BoardBootimagePartitionSize, $(BOARD_BOOTIMAGE_PARTITION_SIZE))
+  $(call add_json_str, BoardVendorBootimagePartitionSize, $(BOARD_VENDOR_BOOTIMAGE_PARTITION_SIZE))
   $(call add_json_str, BoardInitBootimagePartitionSize, $(BOARD_INIT_BOOT_IMAGE_PARTITION_SIZE))
   $(call add_json_str, BoardBootHeaderVersion, $(BOARD_BOOT_HEADER_VERSION))
   $(call add_json_str, TargetKernelPath, $(TARGET_KERNEL_PATH))