diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index 69dd3e6566e02edd05a4ef8054913df1326bd29a..a92e783fa057070a2d46ece41089bae6e3a26fe4 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -24,6 +24,7 @@
 #define EXT4_XATTR_INDEX_SYSTEM			7
 #define EXT4_XATTR_INDEX_RICHACL		8
 #define EXT4_XATTR_INDEX_ENCRYPTION		9
+#define EXT4_XATTR_INDEX_HURD			10 /* Reserved for Hurd */
 
 struct ext4_xattr_header {
 	__le32	h_magic;	/* magic number for identification */