diff --git a/Packages/vChewing_MainAssembly/Sources/MainAssembly/AppDelegate.swift b/Packages/vChewing_MainAssembly/Sources/MainAssembly/AppDelegate.swift
index c97c767c..d6766028 100644
--- a/Packages/vChewing_MainAssembly/Sources/MainAssembly/AppDelegate.swift
+++ b/Packages/vChewing_MainAssembly/Sources/MainAssembly/AppDelegate.swift
@@ -145,7 +145,7 @@ public extension AppDelegate {
     guard let currentMemorySizeInBytes = NSApplication.memoryFootprint else { return 0 }
     let currentMemorySize: Double = (Double(currentMemorySizeInBytes) / 1024 / 1024).rounded(toPlaces: 1)
     switch currentMemorySize {
-    case 512...:
+    case 768...:
       vCLog("WARNING: EXCESSIVE MEMORY FOOTPRINT (\(currentMemorySize)MB).")
       let userNotification = NSUserNotification()
       userNotification.title = NSLocalizedString("vChewing", comment: "")