diff --git a/Source/Modules/InputHandler_HandleComposition.swift b/Source/Modules/InputHandler_HandleComposition.swift
index 756a4348..96a724cd 100644
--- a/Source/Modules/InputHandler_HandleComposition.swift
+++ b/Source/Modules/InputHandler_HandleComposition.swift
@@ -256,6 +256,14 @@ extension InputHandler {
     prehandling: if !skipStrokeHandling && currentLM.isThisCassetteKeyAllowed(key: inputText) {
       if calligrapher.isEmpty, isWildcardKeyInput {
         delegate.callError("3606B9C0")
+        if input.beganWithLetter {
+          var newEmptyState = compositor.isEmpty ? IMEState.ofEmpty() : generateStateOfInputting()
+          newEmptyState.tooltip = NSLocalizedString("Wildcard key cannot be the initial key.", comment: "")
+          newEmptyState.data.tooltipColorState = .redAlert
+          newEmptyState.tooltipDuration = 1.0
+          delegate.switchState(newEmptyState)
+          return true
+        }
         delegate.callNotification(NSLocalizedString("Wildcard key cannot be the initial key.", comment: ""))
         return nil
       }