diff --git a/_server/MotaActionParser.js b/_server/MotaActionParser.js
index b9ec1c6f..ed447206 100644
--- a/_server/MotaActionParser.js
+++ b/_server/MotaActionParser.js
@@ -1464,7 +1464,7 @@ MotaActionFunctions.PosString_pre = function(PosString){
   if (!PosString || /^-?\d+$/.test(PosString)) return PosString;
   //if (!(MotaActionFunctions.pattern.id.test(PosString)))throw new Error(PosString+'中包含了0-9 a-z A-Z _ 和中文之外的字符,或者是没有以flag: 开头');
   var comma = PosString.indexOf(',');
-  if (comma >= 0 && PosString.substring(0, comma).ifndexOf('(') < 0) throw '此处不可写多点坐标';
+  if (comma >= 0 && PosString.substring(0, comma).indexOf('(') < 0) throw '此处不可写多点坐标';
   return '"'+MotaActionFunctions.replaceFromName(PosString)+'"';
 }