diff --git a/rust/tw_coin_entry/src/prefix.rs b/rust/tw_coin_entry/src/prefix.rs
index 942b7fec832..1428b70df71 100644
--- a/rust/tw_coin_entry/src/prefix.rs
+++ b/rust/tw_coin_entry/src/prefix.rs
@@ -9,6 +9,7 @@ use crate::error::prelude::*;
 #[derive(Clone)]
 pub enum AddressPrefix {
     Hrp(String),
+    SubstrateNetwork(u16),
 }
 
 /// A blockchain's address prefix should be convertable from an `AddressPrefix`.