diff --git a/Easydict/Feature/Service/Caiyun/CaiyunService.swift b/Easydict/Feature/Service/Caiyun/CaiyunService.swift
index c65e47078..45b177f12 100644
--- a/Easydict/Feature/Service/Caiyun/CaiyunService.swift
+++ b/Easydict/Feature/Service/Caiyun/CaiyunService.swift
@@ -26,10 +26,11 @@ public final class CaiyunService: QueryService {
     override public func supportLanguagesDictionary() -> MMOrderedDictionary<AnyObject, AnyObject> {
         // TODO: Replace MMOrderedDictionary in the API
         let orderedDict = MMOrderedDictionary<AnyObject, AnyObject>()
-        orderedDict.setObject("auto" as NSString, forKey: Language.auto.rawValue as NSString)
-        orderedDict.setObject("zh" as NSString, forKey: Language.simplifiedChinese.rawValue as NSString)
-        orderedDict.setObject("en" as NSString, forKey: Language.english.rawValue as NSString)
-        orderedDict.setObject("ja" as NSString, forKey: Language.japanese.rawValue as NSString)
+        let keys = ["auto", "zh", "en", "ja"]
+        let values = [Language.auto, Language.simplifiedChinese, Language.english, Language.japanese]
+        for (index, key) in keys.enumerated() {
+            orderedDict.setObject(key as NSString, forKey: values[index].rawValue as NSString)
+        }
         return orderedDict
     }