diff --git a/index.js b/index.js
index 3524ca6..89feece 100644
--- a/index.js
+++ b/index.js
@@ -62,7 +62,8 @@ editor.addEventListener("change", (ev) => {
 runButton.onclick = (ev) => {
     const code = editor.getValue();
     runCode(code, consoleCode);
-    runButton.textContent = "⚙️ Running...";
+    runButton.textContent = "◼ Stop";
+	runButton.classList.add("active");
 };
 
 function downloadFile(content, mime, extension) {