diff --git a/machine.capnp b/machine.capnp
index c1672f1..2b31750 100644
--- a/machine.capnp
+++ b/machine.capnp
@@ -30,7 +30,7 @@ struct Machine {
         end @2: UInt64;
     }
 
-    id @0 :General.UUID;
+    id @0 :Text;
     space @1 :Space;
     name @2 :Text;
     description @3 :Text;