diff --git a/ui/ui/pppoe-add.tpl b/ui/ui/pppoe-add.tpl
index b8ace2b4..0a02be52 100644
--- a/ui/ui/pppoe-add.tpl
+++ b/ui/ui/pppoe-add.tpl
@@ -161,7 +161,8 @@
     <option value="Hrs">{Lang::T('Hrs')}</option>
     <option value="Days">{Lang::T('Days')}</option>
     <option value="Months">{Lang::T('Months')}</option>`;
-    var postOpt = `<option value="Period">{Lang::T('Period')}</option>`;
+    var postOpt = `<option value="Period">{Lang::T('Period')}
+    <option value="Months">{Lang::T('Months')}</option>`;
     function prePaid() {
         $("#validity_unit").html(preOpt);
         $('#expired_date').addClass('hidden');
diff --git a/ui/ui/pppoe-edit.tpl b/ui/ui/pppoe-edit.tpl
index ef78a3a7..1ad49ceb 100644
--- a/ui/ui/pppoe-edit.tpl
+++ b/ui/ui/pppoe-edit.tpl
@@ -226,7 +226,8 @@
     <option value="Hrs">{Lang::T('Hrs')}</option>
     <option value="Days">{Lang::T('Days')}</option>
     <option value="Months">{Lang::T('Months')}</option>`;
-    var postOpt = `<option value="Period">{Lang::T('Period')}</option>`;
+    var postOpt = `<option value="Period">{Lang::T('Period')}</option>
+    <option value="Months">{Lang::T('Months')}</option>`;
     function prePaid() {
         $("#validity_unit").html(preOpt);
         $('#expired_date').addClass('hidden');