diff --git a/Source/Modules/LangModelRelated/LMConsolidator.swift b/Source/Modules/LangModelRelated/LMConsolidator.swift
index 30f173dc..b9392b4f 100644
--- a/Source/Modules/LangModelRelated/LMConsolidator.swift
+++ b/Source/Modules/LangModelRelated/LMConsolidator.swift
@@ -120,14 +120,10 @@ extension vChewing {
           }
 
           // Step 4: Deduplication.
-          let arrData = strProcessed.components(separatedBy: "\n")
-          strProcessed = ""  // Reset its value
+          let arrData = strProcessed.split(separator: "\n")
           // 下面兩行的 reversed 是首尾顛倒，免得破壞最新的 override 資訊。
           let arrDataDeduplicated = Array(NSOrderedSet(array: arrData.reversed()).array as! [String])
-          for lineData in arrDataDeduplicated.reversed() {
-            strProcessed += lineData
-            strProcessed += "\n"
-          }
+          strProcessed = arrDataDeduplicated.reversed().joined(separator: "\n") + "\n"
 
           // Step 5: Remove duplicated newlines at the end of the file.
           strProcessed.regReplace(pattern: "\\n+", replaceWith: "\n")