diff --git a/headers/private/storage/DiskDeviceTypes.h b/headers/private/storage/DiskDeviceTypes.h
index 1662420585..fb5987627c 100644
--- a/headers/private/storage/DiskDeviceTypes.h
+++ b/headers/private/storage/DiskDeviceTypes.h
@@ -39,6 +39,8 @@ extern const char *kPartitionTypeEXT2;
 extern const char *kPartitionTypeEXT3;
 extern const char *kPartitionTypeFAT12;
 extern const char *kPartitionTypeFAT32;
+extern const char *kPartitionTypeHFS;
+extern const char *kPartitionTypeHFSPlus;
 extern const char *kPartitionTypeISO9660;
 extern const char *kPartitionTypeReiser;
 extern const char *kPartitionTypeUDF;