diff --git a/sdk/src/client/secret/mod.rs b/sdk/src/client/secret/mod.rs
index 19fe7dc2c2..7293ccfd24 100644
--- a/sdk/src/client/secret/mod.rs
+++ b/sdk/src/client/secret/mod.rs
@@ -71,6 +71,8 @@ pub trait SecretManage: Send + Sync {
     type Error: std::error::Error + Send + Sync;
 
     /// Generates public keys.
+    ///
+    /// For `coin_type`, see also <https://github.com/satoshilabs/slips/blob/master/slip-0044.md>.
     async fn generate_ed25519_public_keys(
         &self,
         coin_type: u32,