diff --git a/src/main.rs b/src/main.rs
index d934e0250581e87a2d78d6e0dc10fbd4dbdbd301..8ee9098934ffb3cf7b733a1dbd87ba4a8ad80e96 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -42,7 +42,7 @@ pub struct Args {
 	/// (eventually followed by derivation path)
 	#[clap(short, long)]
 	secret: Option<String>,
-	/// Secret key format (seed, substrate)
+	/// Secret key format (seed, substrate, cesium)
 	#[clap(short = 'S', long, default_value = SecretFormat::Substrate)]
 	secret_format: SecretFormat,
 	/// Address