diff --git a/application/views/qso/index.php b/application/views/qso/index.php
index c82e5fd78..6cc47c1ca 100644
--- a/application/views/qso/index.php
+++ b/application/views/qso/index.php
@@ -653,6 +653,7 @@
 
         <div id="winkey_buttons" class="card-body">
 			<div class="form-inline d-flex align-items-center mb-2">
+				<button onclick="stop_cw_sending()" class="btn btn-sm btn-danger" style="margin-left: 2px; margin-right: 2px;"><?= __("Stop"); ?></button>
 				<button id="morsekey_func1" onclick="morsekey_func1()" class="btn btn-sm btn-warning" style="margin-left: 2px; margin-right: 2px;">F1</button>
 				<button id="morsekey_func2" onclick="morsekey_func2()" class="btn btn-sm btn-warning" style="margin-left: 2px; margin-right: 2px;">F2</button>
 				<button id="morsekey_func3" onclick="morsekey_func3()" class="btn btn-sm btn-warning" style="margin-left: 2px; margin-right: 2px;">F3</button>
diff --git a/assets/js/winkey.js b/assets/js/winkey.js
index c4bc653f5..6d51550d1 100644
--- a/assets/js/winkey.js
+++ b/assets/js/winkey.js
@@ -159,6 +159,10 @@ async function connect() {
     }
 }
 
+function stop_cw_sending() {
+	sendHexToSerial("0A");
+}
+
 function delay(ms) {
     return new Promise(resolve => setTimeout(resolve, ms));
 }