diff --git a/Common/Data/Excel/TutorialDataExcel.cs b/Common/Data/Excel/TutorialDataExcel.cs
index 7690c75e..3a8e8215 100644
--- a/Common/Data/Excel/TutorialDataExcel.cs
+++ b/Common/Data/Excel/TutorialDataExcel.cs
@@ -13,6 +13,6 @@ public class TutorialDataExcel : ExcelResource
 
     public override void Loaded()
     {
-        GameData.TutorialDataData.Add(TutorialID, this);
+        GameData.TutorialDataData.TryAdd(TutorialID, this);
     }
 }
\ No newline at end of file
diff --git a/Common/Data/Excel/TutorialGuideDataExcel.cs b/Common/Data/Excel/TutorialGuideDataExcel.cs
index 91d69450..d487d547 100644
--- a/Common/Data/Excel/TutorialGuideDataExcel.cs
+++ b/Common/Data/Excel/TutorialGuideDataExcel.cs
@@ -12,6 +12,6 @@ public class TutorialGuideDataExcel : ExcelResource
 
     public override void Loaded()
     {
-        GameData.TutorialGuideDataData.Add(ID, this);
+        GameData.TutorialGuideDataData.TryAdd(ID, this);
     }
 }
\ No newline at end of file