diff --git a/core/function-impl/mogo-core-function-check/src/main/java/com/mogo/eagle/core/function/report/IPCReportManager.kt b/core/function-impl/mogo-core-function-check/src/main/java/com/mogo/eagle/core/function/report/IPCReportManager.kt
index 08dc07db56..95be0dd32a 100644
--- a/core/function-impl/mogo-core-function-check/src/main/java/com/mogo/eagle/core/function/report/IPCReportManager.kt
+++ b/core/function-impl/mogo-core-function-check/src/main/java/com/mogo/eagle/core/function/report/IPCReportManager.kt
@@ -35,7 +35,7 @@ class IPCReportManager : IMoGoAutopilotStatusListener {
     override fun onAutopilotGuardian(guardianInfo: MogoReportMsg.MogoReportMessage?) {
         guardianInfo?.let{
             if(it.level=="error"){
-                if(ipcReportList.size>20){
+                if(ipcReportList.size>19){
                     ipcReportList.removeLast()
                 }
                 ipcReportList.add(0,
diff --git a/core/function-impl/mogo-core-function-hmi/src/main/java/com/mogo/eagle/core/function/hmi/ui/MoGoHmiFragment.kt b/core/function-impl/mogo-core-function-hmi/src/main/java/com/mogo/eagle/core/function/hmi/ui/MoGoHmiFragment.kt
index 6cce19c533..d81c5208d4 100644
--- a/core/function-impl/mogo-core-function-hmi/src/main/java/com/mogo/eagle/core/function/hmi/ui/MoGoHmiFragment.kt
+++ b/core/function-impl/mogo-core-function-hmi/src/main/java/com/mogo/eagle/core/function/hmi/ui/MoGoHmiFragment.kt
@@ -1023,7 +1023,7 @@ class MoGoHmiFragment : MvpFragment<MoGoHmiContract.View?, HmiPresenter?>(),
     override fun onAutopilotGuardian(guardianInfo: MogoReportMsg.MogoReportMessage?) {
         ThreadUtils.runOnUiThread{
             guardianInfo?.let {
-                if(reportList.size>20){
+                if(reportList.size>19){
                     reportList.removeLast()
                 }
                 reportList.add(0,