diff --git a/Assets/Scripts/LevelEditor/Editor.cs b/Assets/Scripts/LevelEditor/Editor.cs
index 75011d6f0..0607a4c0a 100644
--- a/Assets/Scripts/LevelEditor/Editor.cs
+++ b/Assets/Scripts/LevelEditor/Editor.cs
@@ -512,7 +512,7 @@ namespace HeavenStudio.Editor
         public string GetPropertiesJson()
         {
             string json = string.Empty;
-            json = JsonConvert.SerializeObject(GameManager.instance.Beatmap);
+            json = JsonConvert.SerializeObject(PropController.instance.properties);
             return json;
         }
 
diff --git a/Assets/Scripts/LevelEditor/Properties/PropController.cs b/Assets/Scripts/LevelEditor/Properties/PropController.cs
index 4760663bd..48b2e09aa 100644
--- a/Assets/Scripts/LevelEditor/Properties/PropController.cs
+++ b/Assets/Scripts/LevelEditor/Properties/PropController.cs
@@ -21,7 +21,7 @@ namespace HeavenStudio.Editor
     {
         public static PropController instance { get; private set; } = new PropController();
 
-        public Properties properties;
+        public Properties properties = new Properties();
 
         public void LoadProperties(string json = "")
         {