diff --git a/Source/Modules/PrefMgr_Core.swift b/Source/Modules/PrefMgr_Core.swift
index c6d3356c..7b336831 100644
--- a/Source/Modules/PrefMgr_Core.swift
+++ b/Source/Modules/PrefMgr_Core.swift
@@ -193,7 +193,6 @@ public class PrefMgr: PrefMgrProtocol {
   public var cassetteEnabled: Bool {
     didSet {
       LMMgr.setCassetteEnabled(cassetteEnabled)  // 很重要
-      LMMgr.loadCassetteData()
     }
   }
 
diff --git a/Source/Modules/UIModules/PrefUI/VwrPrefPaneCassette.swift b/Source/Modules/UIModules/PrefUI/VwrPrefPaneCassette.swift
index fbcbe89c..0ae9df9d 100644
--- a/Source/Modules/UIModules/PrefUI/VwrPrefPaneCassette.swift
+++ b/Source/Modules/UIModules/PrefUI/VwrPrefPaneCassette.swift
@@ -78,7 +78,6 @@ struct VwrPrefPaneCassette: View {
                       PrefMgr.shared.cassettePath = url.path
                       tbxCassettePath = PrefMgr.shared.cassettePath
                       BookmarkManager.shared.saveBookmark(for: url)
-                      LMMgr.loadCassetteData()
                     } else {
                       IMEApp.buzz()
                       if !bolPreviousPathValidity {
diff --git a/Source/Modules/WindowControllers/CtlPrefWindow.swift b/Source/Modules/WindowControllers/CtlPrefWindow.swift
index fffba373..7aff64ab 100644
--- a/Source/Modules/WindowControllers/CtlPrefWindow.swift
+++ b/Source/Modules/WindowControllers/CtlPrefWindow.swift
@@ -325,7 +325,6 @@ class CtlPrefWindow: NSWindowController {
         if LMMgr.checkCassettePathValidity(url.path) {
           PrefMgr.shared.cassettePath = url.path
           BookmarkManager.shared.saveBookmark(for: url)
-          LMMgr.loadCassetteData()
         } else {
           IMEApp.buzz()
           if !bolPreviousPathValidity {