diff --git a/sec-beidou/src/main/java/com/imdroid/beidou/controller/APIController.java b/sec-beidou/src/main/java/com/imdroid/beidou/controller/APIController.java
index 71c54af7..7f6f88ac 100644
--- a/sec-beidou/src/main/java/com/imdroid/beidou/controller/APIController.java
+++ b/sec-beidou/src/main/java/com/imdroid/beidou/controller/APIController.java
@@ -68,7 +68,7 @@ public class APIController extends BasicController{
             // 检查是否需要更新 ICCID
             updateICCID(device,dtuAck);
         }
-        else if(msgType == 0xd313&&configAck.length()>=100){
+        else if(msgType == 0xd313&&configAck.length()>=90){
             //转成字符串
             String dtuAck = configAck.substring(26*2);
             rxInfo += configAck+"("+HexUtil.HexString2String(dtuAck)+")";