diff --git a/Runtime/API/BaseChart_API.cs b/Runtime/API/BaseChart_API.cs
index 1efcf1ba..2ac5a924 100644
--- a/Runtime/API/BaseChart_API.cs
+++ b/Runtime/API/BaseChart_API.cs
@@ -649,7 +649,6 @@ namespace XCharts
         public string CheckWarning()
         {
             warningInfo = CheckHelper.CheckChart(this);
-            Debug.LogError(warningInfo);
             return warningInfo;
         }
     }
diff --git a/Runtime/Helper/CheckHelper.cs b/Runtime/Helper/CheckHelper.cs
index b98da654..2d5cf764 100644
--- a/Runtime/Helper/CheckHelper.cs
+++ b/Runtime/Helper/CheckHelper.cs
@@ -1,4 +1,3 @@
-using System.Linq;
 /******************************************/
 /*                                        */
 /*     Copyright (c) 2018 monitor1394     */
@@ -7,7 +6,6 @@ using System.Linq;
 /******************************************/
 using System.Text;
 using UnityEngine;
-using UnityEngine.UI;
 
 namespace XCharts
 {