diff --git a/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt b/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
index fd454edcf..6d82d76f2 100644
--- a/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
@@ -386,7 +386,7 @@ object LocalBook {
     }
 
     //下载book对应的远程文件 并更新Book
-    private fun downloadRemoteBook(localBook: Book):  {
+    private fun downloadRemoteBook(localBook: Book) {
         val webDavUrl = localBook.getRemoteUrl()
         if (webDavUrl.isNullOrBlank()) return null
         try {