diff --git a/app/src/main/java/io/legado/app/help/storage/Backup.kt b/app/src/main/java/io/legado/app/help/storage/Backup.kt
index 454468bf5..b117020bb 100644
--- a/app/src/main/java/io/legado/app/help/storage/Backup.kt
+++ b/app/src/main/java/io/legado/app/help/storage/Backup.kt
@@ -130,7 +130,7 @@ object Backup {
         }
     }
 
-    @Throws(java.lang.Exception::class)
+    @Throws(Exception::class)
     private fun copyBackup(context: Context, uri: Uri, isAuto: Boolean) {
         DocumentFile.fromTreeUri(context, uri)?.let { treeDoc ->
             for (fileName in backupFileNames) {
@@ -153,7 +153,7 @@ object Backup {
         }
     }
 
-    @Throws(java.lang.Exception::class)
+    @Throws(Exception::class)
     private fun copyBackup(rootFile: File, isAuto: Boolean) {
         for (fileName in backupFileNames) {
             val file = File(backupPath + File.separator + fileName)