diff --git a/daemon/listfs.ml b/daemon/listfs.ml
index 2376b61db..4cc3c437a 100644
--- a/daemon/listfs.ml
+++ b/daemon/listfs.ml
@@ -111,8 +111,9 @@ and is_partition_can_hold_filesystem partition =
       false
     else if is_mbr_bogus parttype device partnum then
       true
+    else if is_mbr then
+      true
     else (
-      (* MBR partition id will be converted into corresponding GPT type. *)
       let gpt_type = Parted.part_get_gpt_type device partnum in
       match gpt_type with
       (* Windows Logical Disk Manager metadata partition. *)
diff --git a/generator/actions_core.ml b/generator/actions_core.ml
index 26c576c72..faabfdd77 100644
--- a/generator/actions_core.ml
+++ b/generator/actions_core.ml
@@ -8118,9 +8118,7 @@ for a useful list of type GUIDs." };
     ];
     shortdesc = "get the type GUID of a GPT partition";
     longdesc = "\
-Return the type GUID of numbered GPT partition C<partnum>. For MBR partitions,
-return an appropriate GUID corresponding to the MBR type. Behaviour is undefined
-for other partition types." };
+Return the type GUID of numbered GPT partition C<partnum>." };
 
   { defaults with
     name = "part_set_gpt_attributes"; added = (1, 21, 1);