diff --git a/src/cli/cli.rs b/src/cli/cli.rs
index 38b834e..8745204 100644
--- a/src/cli/cli.rs
+++ b/src/cli/cli.rs
@@ -29,7 +29,7 @@ use nom_locate::{LocatedSpan, position};
 use strum::{EnumDiscriminants, EnumString, IntoDiscriminant, IntoStaticStr};
 use thiserror::Error;
 
-const DEFAULT_INSTRUMENT: &str = "sin(2*pi()*(442+442*((n+1)/N))*t)";
+const DEFAULT_INSTRUMENT: &str = "sin(2*pi()*(442*2^((n+1)/N))*t)";
 const DEFAULT_LENGTH: &str = "2^(2-log(2, l))*(60/T)";
 
 #[derive(Debug, Parser)]