diff --git a/examples/simple_sender.rs b/examples/simple_sender.rs
index c047f2f63..6a634b801 100644
--- a/examples/simple_sender.rs
+++ b/examples/simple_sender.rs
@@ -12,15 +12,12 @@ async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     pretty_env_logger::init();
 
     let mut device_token = String::new();
-    let mut api_key = String::new();
 
     {
         let mut ap = ArgumentParser::new();
         ap.set_description("A simple FCM notification sender");
         ap.refer(&mut device_token)
             .add_option(&["-t", "--device_token"], Store, "Device token");
-        ap.refer(&mut api_key)
-            .add_option(&["-k", "--api_key"], Store, "API key");
         ap.parse_args_or_exit();
     }