diff --git a/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleEvent.swift b/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleEvent.swift
index b17d445e..491c3f8f 100644
--- a/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleEvent.swift
+++ b/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleEvent.swift
@@ -88,7 +88,6 @@ public extension SessionCtl {
               ? "Caps Lock " + "Alphanumerical Input Mode".localized + "\n" + status
               : "Chinese Input Mode".localized + "\n" + status
           )
-          self.isASCIIMode = isCapsLockTurnedOn
         }
       }
     }