diff --git a/src/main.rs b/src/main.rs
index 5eb1255..23adc72 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -190,11 +190,9 @@ fn process_oss_files(options: &Options, oss_client: &OSSClient, bucket_name: &st
         print_message(MessageType::DEBUG, &format!("Processed meta file content: {}", &new_meta_file_content));
     }
     oss_client.put_file_content(bucket_name, meta_file_key, &new_meta_file_content)?;
-    if !removed_file.is_empty() {
-        for rm_file in removed_file {
-            print_message(MessageType::INFO, &format!("Remove OSS key: {}", &rm_file));
-            oss_client.delete_file(bucket_name, &rm_file)?;
-        }
+    for rm_file in removed_file {
+        print_message(MessageType::INFO, &format!("Remove OSS key: {}", &rm_file));
+        oss_client.delete_file(bucket_name, &rm_file)?;
     }
     Ok(())
 }
@@ -209,7 +207,7 @@ fn process_new_backup_file(backup_content_json: &str, new_item: &str, limit: usi
 
     let stringifyed_json = stringity_json_array(&parsed_vec)?;
 
-    Ok((removed_vec, stringifyed_json.to_string()))
+    Ok((removed_vec, stringifyed_json))
 }
 
 // stringify JSON array