diff --git a/tvix/nix-compat/src/nar/wire/mod.rs b/tvix/nix-compat/src/nar/wire/mod.rs
index 01fe9c836..ddf021bc1 100644
--- a/tvix/nix-compat/src/nar/wire/mod.rs
+++ b/tvix/nix-compat/src/nar/wire/mod.rs
@@ -119,6 +119,8 @@ fn tokens() {
         (&TOK_ENT, &["entry", "(", "name"]),
         (&TOK_NOD, &["node", "(", "type"]),
         (&TOK_PAR, &[")"]),
+        #[cfg(feature = "async")]
+        (&TOK_PAD_PAR, &["", ")"]),
     ];
 
     for &(tok, xs) in cases {