diff --git a/main.js b/main.js
index 6cb1a44..e61ff2d 100644
--- a/main.js
+++ b/main.js
@@ -312,6 +312,11 @@ var snippets = [
 	insert: "x " + (new Date).toISOString().substring(0, 10) + " "
 }];
 
+function genguid()
+{
+	return crypto.randomUUID();
+}
+
 function purgetodo() {
 	if (currentistodo() && confirm("Remove completed tasks?"))
 	{
@@ -1180,7 +1185,7 @@ function loadstorage()
 	{
 		notesindex = {};
 		// todo: refactor in "add new note"
-		var guid = crypto.randomUUID();
+		var guid = genguid();
 		var content = defaultheaders();
 		var item = {
 			title: timestamp(),
@@ -1306,7 +1311,7 @@ function migratelegacystorage()
 		var index = {};
 		legacy.forEach(note =>
 		{
-			var guid = crypto.randomUUID();
+			var guid = genguid();
 			localStorage.setItem(guid, note.content);
 			note.tags = gettags(note.content);
 			delete note.content;