diff --git a/btrfs-sb-mod.c b/btrfs-sb-mod.c
index 4961819e..68860911 100644
--- a/btrfs-sb-mod.c
+++ b/btrfs-sb-mod.c
@@ -109,8 +109,10 @@ struct fspec {
 
 enum field_type {
 	TYPE_UNKNOWN,
-	TYPE_U64,
+	TYPE_U8,
 	TYPE_U16,
+	TYPE_U32,
+	TYPE_U64,
 };
 
 struct sb_field {