diff --git a/package.json b/package.json
index 4298f79..5dd4fb3 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "marker",
   "private": true,
   "author": "Savin Angel-Mario (savin@fructo.land)",
-  "version": "1.2.3",
+  "version": "1.2.4",
   "type": "module",
   "scripts": {
     "dev": "vite",
diff --git a/src/main.ts b/src/main.ts
index a44f45c..dbac750 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -15,6 +15,14 @@ if (isCompat) {
 	const editor = initEditor(editorWrapper, store);
 	initStatus(editor);
 
+	window.onbeforeunload = () => {
+		if (editor.getValue() !== "") {
+			return "You have unsaved changes. Are you sure you want to leave?";
+		}
+
+		return;
+	}
+
 	registerSW({
 	  onNeedRefresh() {
 	  	createNotice("Marker will update at the next restart");
@@ -44,4 +52,4 @@ if (isCompat) {
 	const unsupportedWrapper = document.getElementById("unsupported")!;
 	editorWrapper.style.display = "none";
 	unsupportedWrapper.style.display = "block";
-}
\ No newline at end of file
+}