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 995ff8fdd..b6960c41e 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
@@ -107,7 +107,8 @@ object Backup {
     private fun copyBackup(context: Context, uri: Uri) {
         DocumentFile.fromTreeUri(context, uri)?.let { treeDoc ->
             for (fileName in backupFileNames) {
-                treeDoc.createFile("text/plain", fileName)?.let { doc ->
+                val doc = treeDoc.findFile(fileName) ?: treeDoc.createFile("text/plain", fileName)
+                doc?.let {
                     DocumentUtils.writeText(
                         context,
                         FileHelp.getFile(backupPath + File.separator + fileName).readText(),