diff --git a/Packages/vChewing_MainAssembly/Sources/MainAssembly/LMMgr_Utilities.swift b/Packages/vChewing_MainAssembly/Sources/MainAssembly/LMMgr_Utilities.swift
index 3aa936e9..0575b8b9 100644
--- a/Packages/vChewing_MainAssembly/Sources/MainAssembly/LMMgr_Utilities.swift
+++ b/Packages/vChewing_MainAssembly/Sources/MainAssembly/LMMgr_Utilities.swift
@@ -311,7 +311,7 @@ public extension LMMgr {
   }
 
   static func openUserDictFile(type: vChewingLM.ReplacableUserDataType, dual: Bool = false, alt: Bool) {
-    let appIdentifier: String = alt ? "" : "Finder"
+    let appIdentifier: String = alt ? "com.apple.TextEdit" : "com.apple.finder"
     openPhraseFile(fromURL: userDictDataURL(mode: IMEApp.currentInputMode, type: type), appIdentifier: appIdentifier)
     guard dual else { return }
     openPhraseFile(fromURL: userDictDataURL(mode: IMEApp.currentInputMode.reversed, type: type), appIdentifier: appIdentifier)
@@ -326,7 +326,7 @@ public extension LMMgr {
     if !Self.checkIfUserFilesExistBeforeOpening() { return }
     DispatchQueue.main.async {
       switch appIdentifier {
-      case "Finder":
+      case "Finder", "com.apple.finder":
         NSWorkspace.shared.activateFileViewerSelecting([url])
       default:
         guard let textEditURL = NSWorkspace.shared.urlForApplication(withBundleIdentifier: "com.apple.TextEdit") else { return }
diff --git a/Source/Modules/WindowControllers/CtlPrefWindow_PhraseEditor.swift b/Source/Modules/WindowControllers/CtlPrefWindow_PhraseEditor.swift
index 936e3fc5..54e08798 100644
--- a/Source/Modules/WindowControllers/CtlPrefWindow_PhraseEditor.swift
+++ b/Source/Modules/WindowControllers/CtlPrefWindow_PhraseEditor.swift
@@ -197,7 +197,7 @@ extension CtlPrefWindow: NSTextViewDelegate, NSTextFieldDelegate {
   @IBAction func openExternallyPEButtonClicked(_: NSButton) {
     DispatchQueue.main.async { [weak self] in
       guard let self = self else { return }
-      let app: String = NSEvent.keyModifierFlags.contains(.option) ? "TextEdit" : "Finder"
+      let app: String = NSEvent.keyModifierFlags.contains(.option) ? "com.apple.TextEdit" : "com.apple.finder"
       LMMgr.shared.openPhraseFile(mode: self.selInputMode, type: self.selUserDataType, appIdentifier: app)
     }
   }