diff --git a/examples/custom-node/src/primitives/tx.rs b/examples/custom-node/src/primitives/tx.rs
index 7c282922f48..fe763e079e5 100644
--- a/examples/custom-node/src/primitives/tx.rs
+++ b/examples/custom-node/src/primitives/tx.rs
@@ -23,7 +23,7 @@ pub enum CustomTransaction {
     /// A regular Optimism transaction as defined by [`OpTxEnvelope`].
     #[envelope(flatten)]
     Op(OpTxEnvelope),
-    /// A [`TxPayment`] tagged with type 0x7E.
+    /// A [`TxPayment`] tagged with type 0x2A (decimal 42).
     #[envelope(ty = 42)]
     Payment(Signed<TxPayment>),
 }