diff --git a/src/main.rs b/src/main.rs
index 1bcaf8d..785d9da 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -15,7 +15,8 @@ fn strip_header(msg: &[u8]) -> Vec<u8> {
 }
 
 fn mopp(speed: u8, data: &[u8]) -> Vec<u8> {
-    let serial = 1u8;
+    let serial = 1u8; // Currently not really used
+
     let morse = HashMap::from([
         (b'0', "-----"),
         (b'1', ".----"),