diff --git a/AssetStudio/AssetsHelper.cs b/AssetStudio/AssetsHelper.cs
index 9e8f33a..28ce3c1 100644
--- a/AssetStudio/AssetsHelper.cs
+++ b/AssetStudio/AssetsHelper.cs
@@ -32,6 +32,11 @@ namespace AssetStudio
             public string[] Dependencies { get; set; }
         }
 
+        public static void SetUnityVersion(string version)
+        {
+            assetsManager.SpecifyUnityVersion = version;
+        }
+
         public static string[] GetMaps()
         {
             Directory.CreateDirectory(MapName);
@@ -46,6 +51,7 @@ namespace AssetStudio
             CABMap.Clear();
             Offsets.Clear();
             BaseFolder = string.Empty;
+            assetsManager.SpecifyUnityVersion = string.Empty;
 
             tokenSource.Dispose();
             tokenSource = new CancellationTokenSource();
diff --git a/AssetStudioGUI/AssetStudioGUIForm.cs b/AssetStudioGUI/AssetStudioGUIForm.cs
index 3dc8f7c..ff0a728 100644
--- a/AssetStudioGUI/AssetStudioGUIForm.cs
+++ b/AssetStudioGUI/AssetStudioGUIForm.cs
@@ -2280,6 +2280,7 @@ namespace AssetStudioGUI
                 name = input;
             }
 
+            var version = specifyUnityVersion.Text;
             var openFolderDialog = new OpenFolderDialog();
             openFolderDialog.Title = $"Select Game Folder";
             if (openFolderDialog.ShowDialog(this) == DialogResult.OK)
@@ -2303,6 +2304,7 @@ namespace AssetStudioGUI
                         }
                     }
                     saveDirectoryBackup = saveFolderDialog.Folder;
+                    AssetsHelper.SetUnityVersion(version);
                     await Task.Run(() => AssetsHelper.BuildAssetMap(files, name, Studio.Game, saveFolderDialog.Folder, exportListType));
                 }
             }