diff --git a/app/www/index.html b/app/www/index.html
index 5967fb9..de5bdb1 100644
--- a/app/www/index.html
+++ b/app/www/index.html
@@ -265,7 +265,7 @@ null==d?void 0:d))},attrHooks:{type:{set:function(a,b){if(!o.radioValue&&"radio"
 	};
 	var incCounter = function (val) {
 		var current = $('#counter').val();
-		$('#counter').val(current + val);
+		$('#counter').val(parseInt(current) + val);
 	};
 	var settingsPage = function () {
 		$('#settings').show();