diff --git a/libupgrade/hmx_upgrade_nvram.h b/libupgrade/hmx_upgrade_nvram.h
index 3c5362a..209dc20 100644
--- a/libupgrade/hmx_upgrade_nvram.h
+++ b/libupgrade/hmx_upgrade_nvram.h
@@ -125,7 +125,8 @@
   HMX_NVRAM_PARTITION_RO,
   HMX_NVRAM_PARTITION_RW,
   HMX_NVRAM_PARTITION_W_RAWFS,
-  HMX_NVRAM_PARTITION_MAX
+  HMX_NVRAM_PARTITION_MAX,
+  HMX_NVRAM_PARTITION_UNSPECIFIED
 } HMX_NVRAM_PARTITION_E;