diff --git a/Source/Modules/ControllerModules/SyllableComposer.swift b/Source/Modules/ControllerModules/SyllableComposer.swift
index 6f9ff3ae..825808ea 100644
--- a/Source/Modules/ControllerModules/SyllableComposer.swift
+++ b/Source/Modules/ControllerModules/SyllableComposer.swift
@@ -1296,7 +1296,7 @@ public struct Tekkon {
   /// 倚天忘形排列預處理專用陣列，但未包含全部的映射內容。
   ///
   /// 在這裡將二十六個字母寫全，也只是為了方便做 validity check。
-  /// 這裡提前對ㄓ/ㄍ/ㄕ做處理，然後再用程式判斷介母類型、據此判斷是否需要換成ㄒ/ㄑ/ㄐ。
+  /// 這裡提前對複音按鍵做處理，然後再用程式判斷介母類型、據此判斷是否需要做複音切換。
   static let mapETen26StaticKeys: [String: String] = [
     "a": "ㄚ", "b": "ㄅ", "c": "ㄕ", "d": "ㄉ", "e": "ㄧ", "f": "ㄈ", "g": "ㄓ", "h": "ㄏ", "i": "ㄞ", "j": "ㄖ", "k": "ㄎ",
     "l": "ㄌ", "m": "ㄇ", "n": "ㄋ", "o": "ㄛ", "p": "ㄆ", "q": "ㄗ", "r": "ㄜ", "s": "ㄙ", "t": "ㄊ", "u": "ㄩ", "v": "ㄍ",