diff --git a/pmcalendar.php b/pmcalendar.php
index 6f14c04..ba327ac 100644
--- a/pmcalendar.php
+++ b/pmcalendar.php
@@ -1983,7 +1983,7 @@ if ($act == 'newevent') {
                 dict.start = $.fullCalendar.formatDate(event.start, 'yyyy-MM-dd');
                 dict.end = $.fullCalendar.formatDate(event.end, 'yyyy-MM-dd');
                 loading.show();
-                dict.reason = prompt("请输入延期原因");
+                dict.reason = prompt("请输入修改原因");
 
                 $.post('./?app=pmcalendar&act=movevent', dict, function (txt) {
                     loading.hide();