diff --git a/src/main.rs b/src/main.rs
index c79f8af..dda77af 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -15,9 +15,11 @@ use rust_util::util_msg::{clear_lastline, flush_stdout};
 
 #[tokio::main]
 async fn main() {
-    let matches = App::new("wacat-rs")
-        .arg(Arg::with_name("connect").short("c").long("connect").takes_value(true).help("WebSocket URL"))
-        .arg(Arg::with_name("disable-ping-pong").long("disable-ping-pong").help("Disable ping/pong"))
+    let matches = App::new("wscat-rs")
+        .arg(Arg::with_name("connect").short("c").long("connect").takes_value(true)
+            .help("WebSocket URL, e.g. wss://example.com/websocket"))
+        .arg(Arg::with_name("disable-ping-pong").long("disable-ping-pong")
+            .help("Disable ping/pong"))
         .get_matches();
 
     let connect = matches.value_of("connect").unwrap_or_else(|| {