diff --git a/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_Core.swift b/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_Core.swift
index 16510860..f97d2386 100644
--- a/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_Core.swift
+++ b/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_Core.swift
@@ -79,9 +79,6 @@ public class SessionCtl: IMKInputController {
 
   // MARK: -
 
-  /// 當前 Caps Lock 按鍵是否被摁下。
-  public static var isCapsLocked: Bool { NSEvent.keyModifierFlags.contains(.capsLock) }
-
   /// 當前這個 SessionCtl 副本是否處於英數輸入模式。
   public var isASCIIMode: Bool {
     get {
diff --git a/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleEvent.swift b/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleEvent.swift
index af2cc70a..59a38f9c 100644
--- a/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleEvent.swift
+++ b/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleEvent.swift
@@ -195,7 +195,7 @@ public extension SessionCtl {
         ? NSLocalizedString("Alphanumerical Input Mode", comment: "") + "\n" + status
         : NSLocalizedString("Chinese Input Mode", comment: "") + "\n" + status
     )
-    if PrefMgr.shared.shiftEisuToggleOffTogetherWithCapsLock, oldValue, !newValue, Self.isCapsLocked {
+    if PrefMgr.shared.shiftEisuToggleOffTogetherWithCapsLock, oldValue, !newValue, CapsLockToggler.isOn {
       CapsLockToggler.turnOff()
     }
   }