diff --git a/app/src/main/java/io/legado/app/help/JsExtensions.kt b/app/src/main/java/io/legado/app/help/JsExtensions.kt
index 1c112ec9c..04f3c7744 100644
--- a/app/src/main/java/io/legado/app/help/JsExtensions.kt
+++ b/app/src/main/java/io/legado/app/help/JsExtensions.kt
@@ -54,7 +54,7 @@ interface JsExtensions {
     }
 
     /**
-     * 实现文件下载,返回路径
+     * 实现16进制字符串转文件
      */
     fun downloadFile(content: String, url: String): String {
         val type = AnalyzeUrl(url).type ?: return ""