diff -r f05ced2b5124 -r f319a8ab931a www/js/mon_fermenter.js
--- a/www/js/mon_fermenter.js	Sat Aug 24 14:17:54 2019 +0200
+++ b/www/js/mon_fermenter.js	Sat Aug 24 16:16:16 2019 +0200
@@ -524,14 +524,19 @@
 	}, 500);
 
 	$('#info_mode').on('change', function (event) {
-		record.mode = args.item.value;
-		$("#fermenter_toggle1").val(0);
-		$("#fermenter_toggle2").val(0);
-		$("#fermenter_toggle3").val(0);
+		var args = event.args;
+		if (args) {
+			record.mode = args.item.value;
+			$("#fermenter_toggle1").val(0);
+			$("#fermenter_toggle2").val(0);
+			$("#fermenter_toggle3").val(0);
+		}
 		newBase = true;
 	});
 	$('#info_stage').on('select', function (event) {
-		record.stage = args.item.value;
+		var args = event.args;
+		if (args)
+			record.stage = args.item.value;
 		newBase = true;
 	});
 	$("#select_beer").on('select', function (event) {